How To Fix /ISIDEX/EDEREG_INV020 - No unique allocation of ID &1 / identification &2 to a service ID

/ISIDEX/EDEREG_INV020 - Overview

• Message type: E = Error

• Message class: /ISIDEX/EDEREG_INV -

• Message number: 020

• Message text: No unique allocation of ID &1 / identification &2 to a service ID

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /ISIDEX/EDEREG_INV020 - No unique allocation of ID &1 / identification &2 to a service ID ?

  The SAP error message /ISIDEX/EDEREG_INV020 indicates that there is no unique allocation of a specific ID (represented by &1) and identification (represented by &2) to a service ID in the system. This typically occurs in the context of service management or service registration processes within SAP, particularly in the IS-U (Utilities) module.
  
  Cause:
  
  
  Duplicate Entries: The most common cause of this error is the presence of duplicate entries in the database for the specified ID and identification. This means that the system has found multiple records that match the criteria, which prevents it from determining a unique allocation.
  
  
  
  Configuration Issues: There may be issues with the configuration settings related to service IDs, leading to conflicts or overlaps in the identification process.
  
  
  Data Integrity Issues: There could be data integrity issues in the database, such as missing or incorrect relationships between service IDs and their corresponding IDs.
  
  
  
  Solution:
  
  
  Check for Duplicates: 
  
  Use transaction codes like SE16 or