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Single LEI Validation — ISO 17442 MOD 97-10 Check Digit
Structure: LOU prefix (4)  +  Entity identifier (14)  +  Check digits (2). All alphanumeric A–Z 0–9.
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Educational Use Only This tool provides a self-assessment / educational framework for internal planning purposes only. It is not a regulatory audit, legal advice, or a substitute for a formal compliance review by a qualified advisor. Verify all interpretations against the official source text and applicable RTS/ITS/guidance published by the relevant authority.
ISO 17442 Structure & Lifecycle Reference
20-character anatomy
2138LOU (4)
+
003UXJIZAK9Y2EEntity ID (14)
+
65Check (2)
LOU prefix (1–4): Identifies the issuing Local Operating Unit (e.g. 2138 = GLEIF Foundation, 529900 = DTCC, 3358 = London Stock Exchange).
Entity ID (5–18): Assigned by the LOU. Alphanumeric, LOU-defined.
Check digits (19–20): ISO 7064 MOD 97-10 over positions 1–18 with appended 00, then 98 minus remainder.
Lifecycle states
ISSUED — Valid, current, renewal fee paid. Use freely in all regulatory messages.
LAPSED — Renewal overdue (>365 days). Structurally valid but MiFID II / EMIR / CBPR+ will reject.
RETIRED — Entity closed/merged. Do not use for new transactions or reports.
PENDING TRANSFER — LOU transfer in progress. Verify before use.
FORMAT ERROR — Failed ISO 17442 structural or check digit validation.
Batch LEI Validation — Paste up to 100 LEIs (one per line or comma-separated)
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LEI Field Population Mapper — ISO 20022 CBPR+ · MiFID II · EMIR · SFTR
🔒 Field mapping uses embedded static reference data only. Verify against latest SWIFT SR2025/SR2026 publications and ESMA RTS before implementation.