How To Fix /PM0/ABP_PLAN_EXTDT021 - Entry not unique

SAP Error Message - Details

• Message type: E = Error

• Message class: /PM0/ABP_PLAN_EXTDT -

• Message number: 021

• Message text: Entry not unique

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/ABP_PLAN_EXTDT021 - Entry not unique ?

  The SAP error message /PM0/ABP_PLAN_EXTDT021 Entry not unique typically occurs in the context of planning or scheduling within the SAP system, particularly when dealing with planning data that has multiple entries that match the criteria being queried or processed. This can happen in various modules, including Project Management (PM) or Advanced Business Planning (ABP).
  
  Cause:
  The error indicates that the system has encountered multiple entries in the database that match the criteria for a specific operation, but it requires a unique entry to proceed. This can happen due to:
  
  Duplicate Entries: There may be duplicate records in the database for the planning data you are trying to access or manipulate.
  Incorrect Selection Criteria: The selection criteria used in the planning transaction may not be specific enough to narrow down to a single entry.
  Data Integrity Issues: There may be issues with data integrity, where the same data has been entered multiple times due to user