Field K3-3OptionalAccount Information

    Metro 2 Field K3-3: K3 Mortgage Identification Number

    The agency or MERS mortgage identification number tied to the loan. Lets investors and registries reconcile the reported tradeline with the registered mortgage.

    Quick Reference

    Field Number:K3-3
    Position:4-21
    Length:18 characters
    Type:alphanumeric
    Record:K3 Segment
    Required:No

    Validation Rules

    • Left-justified, blank-filled when unused
    • Should match the registered MIN/agency number

    Examples

    100020000001234567

    Common Errors

    • Mismatched or partial MIN

    Tips & Best Practices

    • The 18-digit MERS MIN fits exactly in this field

    Related Fields

    K3-2
    K3 Agency Identifier
    Single-character code identifying the mortgage agency or reg...

    Other Account Information

    17AAccount Status27Terms Duration28Terms Frequency15Account Type14Portfolio Type10ECOA Code

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    K3 Mortgage Identification Number - Metro 2 Field K3-3