How To Fix M3565 - With this material type, ext. material no. must not contain only numbers


M3565 - Overview

  • Message type: E = Error

  • Message class: M3 - Material Master

  • Message number: 565

  • Message text: With this material type, ext. material no. must not contain only numbers

  • Show details Hide details
  • What causes this issue?

    You have entered a material number that consists only of numbers.
    However, the material type that you have chosen has been set up in
    customizing in such a way that external numbers are assigned without
    being checked. A purely numerical material number is not allowed for
    this material type.

    The system issues an error message and will not allow you to continue with this transaction until the error is resolved.


    Error message extract from SAP system. Copyright SAP SE.


M3565 - Details

  • Error Code: M3565

    Error Message: With this material type, ext. material no. must not contain only numbers


    Summary

    This error occurs when you try to assign an external material number consisting solely of digits to a material of a specific material type that requires the external number to include non-numeric characters.


    Root Causes

    • The material type configuration enforces that external material numbers cannot be purely numeric.
    • User enters an external material number with only digits, violating the material type's validation rules.
    • Customizing in the material master number assignment (e.g., number range or field checks) restricts numeric-only external numbers.
    • Data migration or interface loads that do not comply with the external number format rules for the material type.


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