How To Fix EDEREG_TOOLS134 - External cross reference number &1 used more than once

SAP Error Message - Details

• Message type: E = Error

• Message class: EDEREG_TOOLS - Deregulation Check Framework

• Message number: 134

• Message text: External cross reference number &1 used more than once

What causes this issue?

The external cross reference number &V1& is allocated to multiple
internal cross reference numbers.
This inconsistency can lead to problems for the recipient during bill
receipt processing and for the distributor during payment advice note
processing and distribution lot processing.

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?

Check your definition of BAdI ISU_IDE_CROSS_REF_NO (method
EXT_CROSSREF_PROVIDE).
If the supplier payments are posted to the end customer accounts using
payment advice notes and distribution lots, check whether the payments
were distributed to the correct account.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message EDEREG_TOOLS134 - External cross reference number &1 used more than once ?

  The SAP error message EDEREG_TOOLS134 indicates that an external cross-reference number (in this case, represented by &1) is being used more than once in a context where it should be unique. This typically occurs in scenarios involving data migration, integration, or when dealing with external systems where unique identifiers are required.
  Cause:
  
  Duplicate Entries: The most common cause of this error is that the external cross-reference number has been entered multiple times in the system, violating the uniqueness constraint.
  Data Migration Issues: If you are migrating data from another system, it is possible that the source data contained duplicates that were not cleaned up before the migration.
  Integration Problems: When integrating with external systems, if the same identifier is sent multiple times without proper handling, this error can occur.
  
  Solution:
  
  Identify Duplicates: Check the data entries for the external cross-reference number in question. You can use transaction codes like SE16 or SE11 to view the relevant tables and identify where the duplicates exist.
  Remove or Update Duplicates: Once identified, you can either remove the duplicate entries or update them to ensure that each external cross-reference number is unique.
  Data Validation: Implement data validation checks before data entry or migration to ensure that duplicates are not introduced in the first place.
  Consult Documentation: Review the relevant SAP documentation or configuration settings to understand how external cross-references are managed in your specific implementation.
  
  Related Information:
  
  Transaction Codes: Use transaction codes like SE16 (Data Browser) or SE11 (Data Dictionary) to investigate the tables where the external cross-reference numbers are stored.
  Tables: Depending on the context, the relevant tables could include those related to master data, transaction data, or specific application modules.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. Sometimes, there may be specific fixes or recommendations provided by SAP.
  Support: If the issue persists and you cannot resolve it, consider reaching out to SAP support or your internal SAP team for further assistance.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.