How To Fix /SAPAPO/CDPSOPT312 - &1: Activity has multiple successors in locked activity chain

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/CDPSOPT -

• Message number: 312

• Message text: &1: Activity has multiple successors in locked activity chain

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/CDPSOPT312 - &1: Activity has multiple successors in locked activity chain ?

  The SAP error message /SAPAPO/CDPSOPT312 &1: Activity has multiple successors in locked activity chain typically occurs in the context of SAP Advanced Planning and Optimization (APO), particularly when dealing with the Capacity Planning or Production Planning modules. This error indicates that there is an issue with the activity chain in the planning process, specifically that an activity has multiple successor activities, which is not allowed in the context of the locked activity chain.
  Cause:
  
  Multiple Successors: The primary cause of this error is that the activity in question has more than one successor activity defined in the planning sequence. In a locked activity chain, each activity can only have one direct successor.
  Locked Activity Chain: The activity chain is locked for processing, which means that changes cannot be made to it while it is being processed. If the system detects multiple successors, it raises this error to prevent inconsistencies.
  Planning Sequence Configuration: There may be an issue with how the planning sequence is configured, leading to multiple successors being defined for a single activity.
  
  Solution:
  
  Review Activity Chain: Check the activity chain configuration in the APO system. Ensure that each activity has only one successor. You can do this by navigating to the relevant planning book or using transaction codes related to activity chains.
  Modify Successors: If you find that an activity has multiple successors, you will need to modify the planning sequence to ensure that each activity has only one successor. This may involve reassigning or restructuring the activities in the chain.
  Unlock Activity Chain: If necessary, unlock the activity chain to make changes. This may involve using specific transaction codes or settings in the APO system to release the lock.
  Check Dependencies: Ensure that the dependencies between activities are correctly defined. Sometimes, the issue may arise from incorrect dependency settings that lead to multiple successors.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on configuring activity chains and resolving related errors.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes in SAP APO, such as /SAPAPO/MC90 for planning book configuration or /SAPAPO/CDPSOPT for optimization settings.
  SAP Notes: Check for any SAP Notes related to this error message. SAP frequently releases notes that provide fixes or workarounds for known issues.
  Support: If the issue persists after attempting the above solutions, consider reaching out to SAP support or consulting with an SAP APO expert for further assistance.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.