Base Segment ErrorsCritical

    B001Missing Account Number

    The account number field is blank or contains only spaces

    Affected Field
    #4Account Number

    Description

    Every account must have a unique Account Number that identifies the tradeline. This is a required field that cannot be blank. The account number should remain consistent for the life of the account and is used by credit bureaus to match and update existing tradelines.

    Common Causes

    • Field left blank in source data
    • Incorrect field mapping
    • Data extraction error
    • Account not properly initialized

    How to Fix

    1. 1Ensure every account has a unique account number
    2. 2Map the correct source field to the Metro 2 account number
    3. 3Validate account numbers before file generation

    More Base Segment Errors

    B002
    Invalid Account Status
    B003
    Status and Payment Rating Mismatch
    B004
    Invalid ECOA Code
    B005
    Missing SSN or Date of Birth
    B006
    Invalid Date Format
    B007
    Future Date Account Opened

    Metro 2 code reference

    A rejected value is usually a wrong code rather than a wrong format. Every CRRG code set has a per-code page with its meaning and cross-field rules. Metro 2 codes: the complete cheat sheet puts all of them on one page.

    Account Status CodesPortfolio TypesAccount Type CodesTerms Frequency CodesPayment RatingsPayment History Profile CodesSpecial Comment CodesCompliance Condition CodesECOA CodesConsumer Information IndicatorsCreditor Classification CodesResidence Codes

    Catch Errors Before Submission

    The platform validates every field and catches errors like B001 before you submit to the credit bureaus.

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    B001: Missing Account Number - Metro 2 Error