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Extract data from certificates of conformance

A certificate of conformance, also written certificate of conformity or CoC, is the signed declaration that a delivered lot meets the specification it was bought against. It is issued by the supplier, or by an accredited inspection body acting for the buyer, and it closes with a formal conformity statement and an overall pass or fail verdict. This is what sets it apart from its neighbors: a certificate of analysis reports the measured test values for a batch and leaves the reader to judge them, and a certificate of origin certifies where goods were made for customs, while a certificate of conformance asserts, against a named standard, that the goods conform. Issued under an ISO 9001 quality system, it is the release gate an incoming-quality team at a buyer such as Falcon Rotorcraft Inc checks before a lot moves into stock or onto a line. Verdict rests on a grid of characteristics and their limits. On CoC-2026-0442, a lot of 2,000 titanium hex bolts, part MF-6120 lot LT-26-0885, is inspected against drawing MF-6120 Rev D and ASTM F468, sampled under an ISO 2859-1 plan at AQL 0.65, inspection level II. Inspection results record each characteristic beside its specification limit and the measured value: tensile strength against a minimum of 830 MPa reads 862 MPa, thread pitch against 1.50 mm reads 1.50 mm, and coating thickness against a 5 to 12 micron range reads 8 microns, each a pass, so the overall verdict is PASS with a defect count of zero. Backing the verdict, the certificate names the inspection body and its accreditation number, here UKAS 4412, and an authorized signatory, because a CoC is only as good as the body that stands behind it. Talonic reads the certificate and returns the supplier and buyer, the inspection body and accreditation number, the specification, the sampling plan, and the overall pass or fail as fields, keeping the conformance line items, the inspection results, and any defect log as tables. Per-characteristic results are held beside their specification limits, so a reviewer sees the 862 MPa reading against the 830 MPa minimum rather than a bare pass. A CoC issued 2026-07-04 by Bureau Inspecta Ltd for a lot supplied by Meridian Aerospace Fasteners Ltd to Falcon Rotorcraft Inc loads into a quality system with its conformity statement intact. Capturing the declaration as written, the tool does not itself certify the goods or judge whether the standard was correctly applied.

What gets extracted from certificates of conformance

Certificate NumberCoC-2026-0442
SupplierMeridian Aerospace Fasteners Ltd
BuyerFalcon Rotorcraft Inc
Inspection BodyBureau Inspecta Ltd
Accreditation NumberUKAS 4412
Item InspectedTitanium hex bolts, part MF-6120
Lot / Batch NumberLT-26-0885
SpecificationASTM F468; drawing MF-6120 Rev D
Sampling PlanISO 2859-1, AQL 0.65, level II
Pass / FailPASS
Defect Count0

How extraction works for certificates of conformance

Certificates of conformance arrive as supplier declarations, accredited-body reports, and scanned signature pages, and the conformity statement, the results grid, and the lot detail sit in different places on each issuer's form. Talonic classifies the certificate and maps it to the inspection schema in the Field Registry, which follows ISO 9001 and inspection-body terminology and separates the item and lot identity from the result and the verdict. Conformance line items return as a table of product, part number, quantity, lot or batch, and the specification standard each line conforms to. Inspection results return as a table where each characteristic sits beside its specification limit, its measured value, its unit, and a pass or fail, so the evidence behind the verdict is legible. Any defects fill a defect log with a class and the units affected, while the overall pass or fail and the defect count are read as their own fields. Because a certificate carries only as much weight as its issuer, the inspection body and its accreditation number are captured. Every value returns with a confidence score and a source-region pointer in conformance with DIN SPEC 91491, so a quality reviewer can verify a measured value against the certificate. Reading the declaration as written, the tool does not certify conformity itself.

Sample extraction

An accredited-body certificate of conformance for a fastener lot

{
  "document_number": "CoC-2026-0442",
  "document_date": "2026-07-04",
  "inspection_date": "2026-07-03",
  "supplier.name": "Meridian Aerospace Fasteners Ltd",
  "supplier.contact": "quality@meridian-fasteners.example",
  "buyer.name": "Falcon Rotorcraft Inc",
  "inspection_body": "Bureau Inspecta Ltd",
  "accreditation_number": "UKAS 4412",
  "inspector": "D. Whitfield, Lead Surveyor",
  "purchase_order_number": "PO-2026-3390",
  "item_inspected": "Titanium hex head bolt, M10 x 40",
  "item_identifier": "MF-6120, lot LT-26-0885",
  "quantity_inspected": 2000,
  "unit_of_measure": "pcs",
  "specification": "ASTM F468; drawing MF-6120 Rev D",
  "sampling_plan": "ISO 2859-1, AQL 0.65, inspection level II",
  "pass_fail": "PASS",
  "defect_count": 0,
  "conformity_statement": "The inspected lot conforms in all sampled characteristics to ASTM F468 and drawing MF-6120 Rev D",
  "inspection_location": "Supplier plant, Sheffield, United Kingdom",
  "expiration_date": "2027-07-03",
  "authorized_signature": "D. Whitfield",
  "conformance_line_items": [
    {
      "product_description": "Titanium hex head bolt, M10 x 40",
      "part_number": "MF-6120",
      "quantity": 2000,
      "unit_of_measure": "pcs",
      "lot_batch_number": "LT-26-0885",
      "specification_standard": "ASTM F468"
    }
  ],
  "inspection_results": [
    {
      "characteristic": "Tensile strength",
      "specification_limit": "min 830 MPa",
      "measured_value": "862",
      "unit": "MPa",
      "result": "Pass"
    },
    {
      "characteristic": "Thread pitch",
      "specification_limit": "1.50 mm",
      "measured_value": "1.50",
      "unit": "mm",
      "result": "Pass"
    },
    {
      "characteristic": "Coating thickness",
      "specification_limit": "5 to 12 micron",
      "measured_value": "8",
      "unit": "micron",
      "result": "Pass"
    }
  ],
  "defect_log": []
}

Frequently asked

How does a certificate of conformance differ from a certificate of analysis and a certificate of origin?

A certificate of analysis reports the measured test values for a batch and leaves the judgment to the reader, and a certificate of origin certifies where goods were manufactured for customs. A certificate of conformance declares, against a named specification, that the lot conforms, and backs the declaration with a pass or fail per characteristic and an overall verdict. On CoC-2026-0442, issued 2026-07-04 by Bureau Inspecta Ltd under an ISO 9001 quality system, that verdict is PASS. Talonic reads all three on their own schemas and cross-links them.

Does it keep the specification limits with the measured values?

Yes. The inspection results table holds each characteristic beside its specification limit, its measured value, and a pass or fail, so on CoC-2026-0442 the tensile reading is shown against its stated minimum, sampled under an ISO 2859-1 plan, rather than collapsed into a single pass.

Why capture the inspection body and its accreditation number?

A certificate carries the weight of the body that issues it. Recording the inspection body, here Bureau Inspecta Ltd, and its accreditation number lets a buyer see who stands behind the declaration and under what scope. For the lot inspected 2026-07-03 that scope covered the sampled characteristics, which matters most when the certificate comes from an external party rather than the supplier.

Does Talonic certify that the goods conform?

No. It returns the conformity statement, the results, and the verdict as written and links each to its source region. For a lot supplied by Meridian Aerospace Fasteners Ltd, the certification is the issuer act; Talonic structures what the certificate says and does not judge whether the standard was applied correctly.

Author note

Reviewed by Talonic engineering, quality schema review · last reviewed 2026-07-08