How To Fix /SAPAPO/OBREF000 - Program error: Invalid function code &1 for call &2

/SAPAPO/OBREF000 - Overview

• Message type: E = Error

• Message class: /SAPAPO/OBREF -

• Message number: 000

• Message text: Program error: Invalid function code &1 for call &2

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 /SAPAPO/OBREF000 - Program error: Invalid function code &1 for call &2 ?

  The SAP error message /SAPAPO/OBREF000 Program error: Invalid function code &1 for call &2 typically occurs in the context of SAP Advanced Planning and Optimization (APO) when there is an issue with the function code being used in a specific call within the program. This error can arise due to various reasons, including configuration issues, coding errors, or data inconsistencies.
  Causes:
  
  Invalid Function Code: The function code being referenced in the error message is not recognized or is not valid for the specific context in which it is being called.
  Custom Development Issues: If there are custom enhancements or modifications in the APO system, they may be incorrectly implemented, leading to this error.
  Data Inconsistencies: There may be issues with the data being processed, such as missing or incorrect entries that the function code relies on.
  System Configuration: Incorrect configuration settings in the APO system can lead to function codes not being recognized.
  
  Solutions:
  
  Check Function Code: