How To Fix CRD_MDA178 - External number &1 was already assigned

CRD_MDA178 - Overview

• Message type: E = Error

• Message class: CRD_MDA - Messages for Master Data Administration - Credentialing

• Message number: 178

• Message text: External number &1 was already assigned

What causes this issue?

You attempted to create an assignment for the external number range
interval&v2& . However, number &v1& is already assigned.

System Response

The incorrect assignment will not be created on the database.

How to fix this error?

Call the process to create assignments using consistent data.

Procedure for System Administrators

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.

Smart SAP Assistant

• What is the cause and solution for SAP error message CRD_MDA178 - External number &1 was already assigned ?

  The SAP error message CRD_MDA178, which states "External number &1 was already assigned," typically occurs in the context of number assignment for certain objects in SAP, such as customer master records, vendor master records, or other entities that require unique identifiers.
  
  Cause:
  The error indicates that the external number you are trying to assign (represented by &1) is already in use or has been assigned to another object in the system. This can happen due to:
  
  Duplicate Entry: The number you are trying to use has already been assigned to another record.
  Incorrect Number Range Configuration: The number range settings may not be configured correctly, leading to conflicts.
  Data Migration Issues: If data was migrated from another system, there may be overlaps in the number assignments.
  Manual Entry Errors: Users may inadvertently try to assign a number that is already in use.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Existing Assignments:
  
  Use transaction codes like