How To Fix /PM0/AB_AT123 - Combination SDS = &1 / PDS = &2 already exists in this sequence

/PM0/AB_AT123 - Overview

• Message type: E = Error

• Message class: /PM0/AB_AT -

• Message number: 123

• Message text: Combination SDS = &1 / PDS = &2 already exists in this sequence

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 /PM0/AB_AT123 - Combination SDS = &1 / PDS = &2 already exists in this sequence ?

  The SAP error message /PM0/AB_AT123 Combination SDS = &1 / PDS = &2 already exists in this sequence typically occurs in the context of Advanced Planning and Optimization (APO) or similar modules where you are dealing with sequences of production or planning data. This error indicates that there is an attempt to create or modify a sequence that already contains a combination of a Source Data Structure (SDS) and a Product Data Structure (PDS) that is already defined.
  
  Cause:
  
  Duplicate Entry: The most common cause of this error is that the combination of the specified SDS and PDS already exists in the system. This can happen if you are trying to create a new sequence or modify an existing one without checking for existing entries.
  Data Integrity Issues: There may be issues with data integrity where the system is not correctly recognizing existing entries due to inconsistencies in the database.
  Configuration Errors: Incorrect configuration