How To Fix /SAPAPO/SDP156 - Planning book &1 is defect. Book &2 was selected

/SAPAPO/SDP156 - Overview

• Message type: E = Error

• Message class: /SAPAPO/SDP -

• Message number: 156

• Message text: Planning book &1 is defect. Book &2 was selected

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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/SAPAPO/SDP156 - Details

• The SAP error message /SAPAPO/SDP156 indicates that there is an issue with the planning book specified in the message. Specifically, it states that the planning book you are trying to use is defective, and as a result, another planning book has been selected automatically by the system.
  
  Cause:
  
  Defective Planning Book: The planning book you are trying to access may have been corrupted or improperly configured. This could be due to changes made to the planning book settings, missing key figures, or issues with the underlying data.
  Authorization Issues: Sometimes, the user may not have the necessary authorizations to access the specified planning book.
  Transport Issues: If the planning book was transported from one system to another (e.g., from development to production), there may have been issues during the transport process that caused the planning book to become defective.
  
  
  Solution:
  
  
  Check Planning Book Configuration: 
  
  Go to the planning book configuration in SAP APO and verify that