How To Fix CME_DTYPE205 - &: predecessor<>successor assignment is not unique

CME_DTYPE205 - Overview

• Message type: E = Error

• Message class: CME_DTYPE - CME Data Type: Checks

• Message number: 205

• Message text: &: predecessor<>successor assignment is 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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CME_DTYPE205 - &: predecessor<>successor assignment is not unique ?

  The SAP error message CME_DTYPE205, which states that "predecessor<>successor assignment is not unique," typically occurs in the context of project management or scheduling within SAP, particularly when dealing with network activities in the Project System (PS) or Production Planning (PP) modules. This error indicates that there is an issue with the assignment of predecessor and successor relationships in a network or task sequence.
  
  Cause:
  The error is caused by the following scenarios:
  
  Duplicate Relationships: There are multiple assignments of the same predecessor to a successor, which creates ambiguity in the scheduling logic.
  Incorrect Configuration: The configuration of the project or network might not allow for the specific predecessor-successor relationship you are trying to establish.
  Data Integrity Issues: There may be inconsistencies or corruption in the data related to the project or network activities.
  
  
  Solution:
  To resolve the CME_DTYPE205 error, you can take the following steps:
  
  
  Check Predecessor-Successor Relationships:
  
  Go to the network or project activity where the error occurred.
  Review