How To Fix COM_PRODUCT_CUSTMSG020 - Check-digit in GTIN &1 (unit of measure &2) is invalid

COM_PRODUCT_CUSTMSG020 - Overview

• Message type: E = Error

• Message class: COM_PRODUCT_CUSTMSG - Product: Customer-Specific Messages

• Message number: 020

• Message text: Check-digit in GTIN &1 (unit of measure &2) is invalid

What causes this issue?

The check digit (last digit) of the GTIN you used is not correct. It is
used to check that the character string preceding it does not contain
any errors and therefore ensures data integrity. The system uses a
predefined algorithm to check this last digit.

System Response

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

How to fix this error?

Correct the check digit.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

COM_PRODUCT_CUSTMSG020 - Details

• The SAP error message COM_PRODUCT_CUSTMSG020 indicates that there is an issue with the check-digit of a Global Trade Item Number (GTIN) for a specific unit of measure. This error typically arises when the GTIN provided does not conform to the expected format or validation rules, particularly regarding its check-digit.
  
  Cause:
  
  Invalid GTIN Format: The GTIN may not be in the correct format (e.g., it should be 8, 12, 13, or 14 digits).
  Incorrect Check-Digit Calculation: The check-digit is calculated using a specific algorithm (usually the Modulo 10 algorithm). If the GTIN is incorrect, the check-digit will not match the expected value.
  Data Entry Errors: There may have been a typographical error when entering the GTIN.
  Outdated or Incorrect Data: The GTIN may not be registered correctly in the system or may have been changed without updating the relevant records.
  
  
  Solution:
  
  Verify GTIN: Check the GTIN for accuracy. Ensure it is the correct number and in the proper