DYNAMICS LAB · OPERATIONS TWIN · SCIENTIFIC REPORT

OTE-001 · Enterprise Process Reconstruction

Study context

Problem addressed
What process and route variants can be reconstructed from the event log?
Contribution relative to existing methods
The study records the full purchase-order log’s case and event structure with reproducible counting rules.
Potential commercial use
Use it as a template to audit the completeness of an authorized process export.

Market context and value assumptions on the engine page

OTE-001

Experiment conclusions

The BPI 2019 log supported reconstruction of 251,734 cases, nearly 1.6 million events and 11,973 distinct sequences. The variants show the many observed paths through the purchasing process and help identify where to investigate.

Study limits. The time between events is observed elapsed time. The log cannot separate work from waiting, and repetition can reflect legitimate activity.

OBSERVED. Observed elapsed time, simulated service assumptions and business outcomes are distinct. This report does not assess individual employees or calculate monetary savings.

Objective and dataset

BPI Challenge2019 · public Purchase-to-Pay log · Boudewijn van Dongen · 4TU.ResearchData · version1 · CC BY4.0. Original input:728,558,522bytes, checked against official MD5.

Official dataset and attribution

Method and parameters

Full official BPI2019 XES is parsed using defusedxml streaming, with original MD5/size checked against4TU metadata. Required fields are validated; UTC timestamps are integer microseconds. Exact full-attribute duplicate candidates remain in the original analysis because no unique event identifier establishes erroneous duplication. Stable timestamp/source order constructs traces, category-specific DFG and variants. Durations are elapsed first-to-last observations, not processing/waiting time. A strict2018sensitivity excludes entire out-of-window cases separately. Repeated activities and Change/Cancel prefixes are descriptive proxies, not proven waste. No monetary costs or individual productivity are inferred.

Structure and data quality

casespurchase_documentseventsvariantscases_with_repeated_activitiesrepeated_activity_occurrencescases_with_change_cancel_proxychange_cancel_eventscases_outside_2018first_observationlast_observationactivitiesidentifiable_resource_tokensreported_batch_tokenslifecycle_valuestransition_types
25173476349159592311973224382905323792355855329201948-01-26T22:59:00Z2020-04-09T21:59:00Z42627200498
source_cases_or_rowssource_eventsmissing_lifecycle_eventsimported_eventsmissing_resource_eventsevents_outside_declared_2018exact_duplicate_candidates_retainedsource_order_time_reversalssame_timestamp_adjacent_pairscategory_conflict_casescases_without_create_itemsource_closed_case_statusservice_and_waiting_times_identifiableexcluded_eventsexcluded_percent
25173415959231595923159592339909045455132748023346300Not supplied; last observed event is not proof of business closureFalse00

Category performance · observed

categorycaseseventsvariantselapsed_mean_dayelapsed_median_dayelapsed_p90_dayelapsed_p95_dayelapsed_min_dayelapsed_max_dayrepeated_activity_case_ratechange_cancel_case_ratecases_outside_2018
3-way match, invoice before GR2210101234708783274.465866.3479127.042142.241025670.50.06899240.14733329880
3-way match, invoice after GR15182319233422874.959163.4222133.967189.51106567.750.346990.181071975
Consignment144983608428124.103619.92648.678762.12660229.8640.1013930.108153661
2-way match1044589814857.453723.6861196.864250.1340.00138889581.360.432951404

Long elapsed transitions · investigation candidates

categorysource_activitytarget_activityfrequencycaseselapsed_mean_dayelapsed_median_dayelapsed_p90_daysame_timestamp_pairs
3-way match, invoice before GRCancel Goods ReceiptCancel Invoice Receipt294294127.902182.233202.2360
3-way match, invoice before GRChange Approval for Purchase OrderBlock Purchase Order Item107107163.371168.687168.6880
3-way match, invoice before GRClear InvoiceCancel Invoice Receipt1777170390.362291.9382172.83451
3-way match, invoice before GRVendor creates invoiceClear Invoice71070955.230658.4271108.420
3-way match, invoice before GRChange Approval for Purchase OrderChange Quantity31529951.600351.927892.09835
3-way match, invoice before GRChange QuantityClear Invoice15215152.315451.517493.32530
3-way match, invoice before GRChange Delivery IndicatorClear Invoice24224244.299343.500777.7070
3-way match, invoice before GRRecord Goods ReceiptCancel Invoice Receipt35535546.00241.9599.96540
3-way match, invoice before GRChange PriceClear Invoice23523540.396537.906284.9510
3-way match, invoice before GRRecord Goods ReceiptClear Invoice47647249.560637.8312105.9770
3-way match, invoice before GRRecord Invoice ReceiptClear Invoice12525812462145.078437.175792.026873
3-way match, invoice after GRClear InvoiceCancel Invoice Receipt33427452.986735.4274132.91414
2-way matchClear InvoiceChange Approval for Purchase Order12612640.184435.386176.92470
3-way match, invoice before GRClear InvoiceVendor creates debit memo10310346.359733.3687122.9140
2-way matchChange Approval for Purchase OrderVendor creates invoice20820849.182629.294499.97170

Model cohort and exclusions

reasoncases
case_crosses_quarter_boundary112599
core_timestamp_outside20187107
eligible_before_document_gate36535
no_comparable_invoice_endpoint_category14498
projected_creation_not_observed_first47709
projected_invoice_clearance_not_observed_last33286
splitcategorycasesdocuments
calibration2-way match22
calibration3-way match, invoice after GR1062602
calibration3-way match, invoice before GR228225858
test2-way match11
test3-way match, invoice after GR10490
test3-way match, invoice before GR1652595
validation3-way match, invoice after GR435273
validation3-way match, invoice before GR104542721

Calculated figures

OTE-001 computed research figure
Generated from the result JSON. No manually inserted scientific values.

Uncertainty and limitations

Evidence and reproducibility

Acquisition: 2026-11-06T11:24:17.701083+00:00 · Execution: 2026-11-06T12:19:53.092290+00:00.

Scientific fingerprint 532a63990523a89438a28fd0b68fb52db5cca98183be0b59a7fc1c340ec9c3ea

Results JSON · Manifest

Complete computed result
{
  "experiment": "OTE-001",
  "title": "Enterprise Process Reconstruction",
  "kind": "OBSERVED",
  "method_version": "ote-discovery-1.0",
  "dataset": {
    "dataset": "BPI Challenge2019",
    "doi": "10.4121/uuid:d06aff4b-79f0-45e6-8ec8-e19730c248f1",
    "version": 1,
    "author": [
      "Boudewijn van Dongen"
    ],
    "publisher": "4TU.ResearchData",
    "license": {
      "value": 1,
      "name": "CC BY 4.0",
      "url": "https://creativecommons.org/licenses/by/4.0/"
    },
    "metadata_url": "https://data.4tu.nl/v2/articles/12715853",
    "original_file_url": "https://data.4tu.nl/file/35ed7122-966a-484e-a0e1-749b64e3366d/864493d1-3a58-47f6-ad6f-27f95f995828",
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    "original": {
      "bytes": 728558522,
      "sha256": "af63bc687fc4152f2123b05c3af7772b37ef3fce2d3f67f812666c9e356baae7",
      "md5": "4eb909242351193a61e1c15b9c3cc814",
      "official_md5_verified": true,
      "gzip_bytes": 16901365
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    "sources": [
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        "url": "https://data.4tu.nl/v2/articles/12715853",
        "organization": "4TU.ResearchData / ICPM2019",
        "acquired_at": "2026-11-06T11:24:15.195956+00:00",
        "release_date": null,
        "etag": null,
        "server_date": "Fri, 06 Nov 2026 11:24:15 GMT",
        "sha256": "6632a3b7c43ccb2fd6981055ff117ea15a8fd3de51282dd0eddfe54284ec70cb",
        "bytes": 8102,
        "http_status": 200,
        "parser_version": "ote-acquisition-1.0",
        "record_counts": null,
        "errors": []
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      {
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        "url": "https://icpmconference.org/2019/wp-content/uploads/sites/6/2019/01/log_IEEE.xes_.gz",
        "organization": "4TU.ResearchData / ICPM2019",
        "acquired_at": "2026-11-06T11:24:17.701083+00:00",
        "release_date": "Wed, 22 May 2024 20:43:25 GMT",
        "etag": "\"101e4f5-61910fc69240c\"",
        "server_date": "Fri, 06 Nov 2026 11:24:15 GMT",
        "sha256": "43edc7abe7b53c75f53f91b6720ba20878de8a3216b5202ae22a0442b92e9c9a",
        "bytes": 16901365,
        "http_status": 200,
        "parser_version": "ote-acquisition-1.0",
        "record_counts": null,
        "errors": []
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    ],
    "source_coverage": "2018, declared in official metadata; out-of-period observations audited separately",
    "amounts": "Anonymized monetary values are excluded; no costs/savings inferred"
  },
  "counts": {
    "cases": 251734,
    "purchase_documents": 76349,
    "events": 1595923,
    "variants": 11973,
    "cases_with_repeated_activities": 22438,
    "repeated_activity_occurrences": 290532,
    "cases_with_change_cancel_proxy": 37923,
    "change_cancel_events": 55855,
    "cases_outside_2018": 32920,
    "first_observation": "1948-01-26T22:59:00Z",
    "last_observation": "2020-04-09T21:59:00Z",
    "activities": 42,
    "identifiable_resource_tokens": 627,
    "reported_batch_tokens": 20,
    "lifecycle_values": 0,
    "transition_types": 498
  },
  "data_quality": {
    "source_cases_or_rows": 251734,
    "source_events": 1595923,
    "missing_lifecycle_events": 1595923,
    "imported_events": 1595923,
    "missing_resource_events": 399090,
    "events_outside_declared_2018": 45455,
    "exact_duplicate_candidates_retained": 132748,
    "source_order_time_reversals": 0,
    "same_timestamp_adjacent_pairs": 233463,
    "category_conflict_cases": 0,
    "cases_without_create_item": 0,
    "source_closed_case_status": "Not supplied; last observed event is not proof of business closure",
    "service_and_waiting_times_identifiable": false,
    "excluded_events": 0,
    "excluded_percent": 0.0
  },
  "category_performance": [
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      "category": "3-way match, invoice before GR",
      "cases": 221010,
      "events": 1234708,
      "variants": 7832,
      "elapsed_mean_day": 74.46582826191877,
      "elapsed_median_day": 66.34791666666666,
      "elapsed_p90_day": 127.04166666666667,
      "elapsed_p95_day": 142.24076388888878,
      "elapsed_min_day": 0.0,
      "elapsed_max_day": 25670.547916666666,
      "repeated_activity_case_rate": 0.06899235328718158,
      "change_cancel_case_rate": 0.1473326998778336,
      "cases_outside_2018": 29880
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    {
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      "events": 319233,
      "variants": 4228,
      "elapsed_mean_day": 74.95906126041072,
      "elapsed_median_day": 63.422222222222224,
      "elapsed_p90_day": 133.96743055555552,
      "elapsed_p95_day": 189.51111111111112,
      "elapsed_min_day": 0.0,
      "elapsed_max_day": 6567.7451388888885,
      "repeated_activity_case_rate": 0.3469898564089053,
      "change_cancel_case_rate": 0.1810696877881702,
      "cases_outside_2018": 1975
    },
    {
      "category": "Consignment",
      "cases": 14498,
      "events": 36084,
      "variants": 281,
      "elapsed_mean_day": 24.10357932511764,
      "elapsed_median_day": 19.926041666666666,
      "elapsed_p90_day": 48.67868055555556,
      "elapsed_p95_day": 62.12656249999993,
      "elapsed_min_day": 0.0,
      "elapsed_max_day": 229.86388888888888,
      "repeated_activity_case_rate": 0.10139329562698303,
      "change_cancel_case_rate": 0.1081528486687819,
      "cases_outside_2018": 661
    },
    {
      "category": "2-way match",
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      "events": 5898,
      "variants": 148,
      "elapsed_mean_day": 57.45366844934014,
      "elapsed_median_day": 23.68611111111111,
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      "repeated_activity_case_rate": 0.4329501915708812,
      "change_cancel_case_rate": 1.0,
      "cases_outside_2018": 404
    }
  ],
  "strict_2018_sensitivity": [
    {
      "category": "2-way match",
      "cases": 640,
      "elapsed_mean_day": 64.16330295138889,
      "elapsed_median_day": 25.54409722222222,
      "elapsed_p90_day": 206.0013888888889
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    {
      "category": "3-way match, invoice after GR",
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      "elapsed_median_day": 62.2125,
      "elapsed_p90_day": 125.83680555555556
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  ],
  "graph": {
    "nodes": [
      {
        "activity": "Record Goods Receipt",
        "events": 314097,
        "cases": 234479
      },
      {
        "activity": "Create Purchase Order Item",
        "events": 251734,
        "cases": 251734
      },
      {
        "activity": "Record Invoice Receipt",
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        "cases": 211379
      },
      {
        "activity": "Vendor creates invoice",
        "events": 219919,
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      },
      {
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        "events": 194393,
        "cases": 183677
      },
      {
        "activity": "Record Service Entry Sheet",
        "events": 164975,
        "cases": 5604
      },
      {
        "activity": "Remove Payment Block",
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        "cases": 55839
      },
      {
        "activity": "Create Purchase Requisition Item",
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        "cases": 46592
      },
      {
        "activity": "Receive Order Confirmation",
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      },
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        "cases": 17590
      },
      {
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        "cases": 11224
      },
      {
        "activity": "Delete Purchase Order Item",
        "events": 8875,
        "cases": 8839
      },
      {
        "activity": "Change Approval for Purchase Order",
        "events": 7541,
        "cases": 4377
      },
      {
        "activity": "Cancel Invoice Receipt",
        "events": 7096,
        "cases": 6471
      },
      {
        "activity": "Vendor creates debit memo",
        "events": 6255,
        "cases": 5988
      },
      {
        "activity": "Change Delivery Indicator",
        "events": 3289,
        "cases": 2975
      },
      {
        "activity": "Cancel Goods Receipt",
        "events": 3096,
        "cases": 2470
      },
      {
        "activity": "SRM: In Transfer to Execution Syst.",
        "events": 1765,
        "cases": 1440
      },
      {
        "activity": "SRM: Awaiting Approval",
        "events": 1628,
        "cases": 1440
      },
      {
        "activity": "SRM: Complete",
        "events": 1628,
        "cases": 1440
      },
      {
        "activity": "SRM: Created",
        "events": 1628,
        "cases": 1440
      },
      {
        "activity": "SRM: Document Completed",
        "events": 1628,
        "cases": 1440
      },
      {
        "activity": "SRM: Ordered",
        "events": 1628,
        "cases": 1440
      },
      {
        "activity": "Release Purchase Order",
        "events": 1610,
        "cases": 961
      },
      {
        "activity": "SRM: Change was Transmitted",
        "events": 1440,
        "cases": 1440
      },
      {
        "activity": "Reactivate Purchase Order Item",
        "events": 543,
        "cases": 529
      },
      {
        "activity": "Block Purchase Order Item",
        "events": 514,
        "cases": 499
      },
      {
        "activity": "Cancel Subsequent Invoice",
        "events": 491,
        "cases": 476
      },
      {
        "activity": "Release Purchase Requisition",
        "events": 467,
        "cases": 467
      },
      {
        "activity": "Change Storage Location",
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        "cases": 364
      },
      {
        "activity": "Update Order Confirmation",
        "events": 244,
        "cases": 227
      },
      {
        "activity": "SRM: Deleted",
        "events": 188,
        "cases": 143
      },
      {
        "activity": "Record Subsequent Invoice",
        "events": 167,
        "cases": 159
      },
      {
        "activity": "Set Payment Block",
        "events": 124,
        "cases": 122
      },
      {
        "activity": "SRM: Transfer Failed (E.Sys.)",
        "events": 45,
        "cases": 45
      },
      {
        "activity": "Change Currency",
        "events": 35,
        "cases": 35
      },
      {
        "activity": "Change Final Invoice Indicator",
        "events": 11,
        "cases": 11
      },
      {
        "activity": "SRM: Transaction Completed",
        "events": 8,
        "cases": 8
      },
      {
        "activity": "Change payment term",
        "events": 7,
        "cases": 7
      },
      {
        "activity": "SRM: Held",
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        "cases": 6
      },
      {
        "activity": "SRM: Incomplete",
        "events": 6,
        "cases": 6
      },
      {
        "activity": "Change Rejection Indicator",
        "events": 2,
        "cases": 1
      }
    ],
    "edges": [
      {
        "category": "3-way match, invoice after GR",
        "source_activity": "Record Service Entry Sheet",
        "target_activity": "Record Service Entry Sheet",
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        "cases": 3770,
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      },
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        "target_activity": "Clear Invoice",
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      },
      {
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        "same_timestamp_pairs": 7
      },
      {
        "category": "3-way match, invoice before GR",
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        "target_activity": "Record Goods Receipt",
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        "cases": 102431,
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        "elapsed_p90_day": 4.778472222222222,
        "same_timestamp_pairs": 0
      },
      {
        "category": "3-way match, invoice before GR",
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        "target_activity": "Vendor creates invoice",
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        "cases": 98700,
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      {
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        "source_activity": "Remove Payment Block",
        "target_activity": "Clear Invoice",
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      {
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        "target_activity": "Remove Payment Block",
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        "same_timestamp_pairs": 52
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      {
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        "source_activity": "Create Purchase Order Item",
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      },
      {
        "split": "calibration",
        "category": "3-way match, invoice before GR",
        "cases": 22822,
        "documents": 5858
      },
      {
        "split": "test",
        "category": "2-way match",
        "cases": 1,
        "documents": 1
      },
      {
        "split": "test",
        "category": "3-way match, invoice after GR",
        "cases": 104,
        "documents": 90
      },
      {
        "split": "test",
        "category": "3-way match, invoice before GR",
        "cases": 1652,
        "documents": 595
      },
      {
        "split": "validation",
        "category": "3-way match, invoice after GR",
        "cases": 435,
        "documents": 273
      },
      {
        "split": "validation",
        "category": "3-way match, invoice before GR",
        "cases": 10454,
        "documents": 2721
      }
    ],
    "exclusion_rules": [
      {
        "reason": "case_crosses_quarter_boundary",
        "cases": 112599
      },
      {
        "reason": "core_timestamp_outside2018",
        "cases": 7107
      },
      {
        "reason": "eligible_before_document_gate",
        "cases": 36535
      },
      {
        "reason": "no_comparable_invoice_endpoint_category",
        "cases": 14498
      },
      {
        "reason": "projected_creation_not_observed_first",
        "cases": 47709
      },
      {
        "reason": "projected_invoice_clearance_not_observed_last",
        "cases": 33286
      }
    ]
  },
  "limits": [
    "Elapsed first-to-last observation is not processing time or waiting time. No start/completion lifecycle supplied in inspected source schema; full distribution audited.",
    "Repeated goods receipts/invoices can be legitimate installments; repetition is not automatically waste or rework. Change/Cancel is an explicit descriptive proxy.",
    "Declared2018coverage differs from any out-of-period observed timestamps; flagged observations remain in full discovery and a strict-window sensitivity is separate.",
    "WIP is an observed interval proxy and last-observation counts are not independently verified true business completions.",
    "Long elapsed transitions suggest investigation; employee productivity, causes and monetary savings are not inferred.",
    "All model validation uses an explicitly projected, endpoint-proxy, quarter-contained and document-disjoint subset; not all251734cases."
  ],
  "results_sha256": "532a63990523a89438a28fd0b68fb52db5cca98183be0b59a7fc1c340ec9c3ea"
}