How To Fix /SAPAPO/CDPSOPT236 - Predecessor for activity &2 in locked activity chain &1 is not valid

/SAPAPO/CDPSOPT236 - Overview

• Message type: E = Error

• Message class: /SAPAPO/CDPSOPT -

• Message number: 236

• Message text: Predecessor for activity &2 in locked activity chain &1 is not valid

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/CDPSOPT236 - Predecessor for activity &2 in locked activity chain &1 is not valid ?

  The SAP error message /SAPAPO/CDPSOPT236 indicates that there is an issue with the predecessor activity in a locked activity chain within the SAP Advanced Planning and Optimization (APO) module. Specifically, it means that the predecessor for the specified activity is not valid, which can occur for several reasons.
  Causes:
  
  Locked Activity Chain: The activity chain is locked, which means that no changes can be made to it. This can happen if another user or process is currently working on it.
  Invalid Predecessor: The predecessor activity specified does not exist or is not valid in the context of the current activity chain.
  Data Inconsistency: There may be inconsistencies in the data related to the activity chain, such as missing or incorrect entries in the master data.
  
  Configuration Issues: There may be configuration issues in the APO system that prevent the predecessor from being recognized as valid.
  
  Solutions:
  
  Check Activity Chain Lock: Verify if the activity chain is indeed