How To Fix CN137 - Specified assignment to standard network does not exist

SAP Error Message - Details

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 137

• Message text: Specified assignment to standard network does not exist

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 CN137 - Specified assignment to standard network does not exist ?

  The SAP error message CN137, which states "Specified assignment to standard network does not exist," typically occurs in the context of project management and network planning within SAP. This error indicates that the system cannot find a specific assignment or relationship that is expected to exist in the standard network.
  Causes:
  
  Missing Assignment: The assignment between the network and the activity or component may not have been created or may have been deleted.
  Incorrect Network Number: The network number specified in the transaction may be incorrect or does not exist in the system.
  Data Inconsistency: There may be inconsistencies in the data, such as missing or incorrect entries in the database.
  Authorization Issues: The user may not have the necessary authorizations to view or modify the network assignments.
  Network Status: The network might be in a status that does not allow for certain operations (e.g., locked or archived).
  
  Solutions:
  
  Check Network Assignment: Verify that the assignment between the network and the activity exists. You can do this by navigating to the network in question and checking the assignments.
  Correct Network Number: Ensure that the network number you are using is correct. You can search for the network using transaction codes like CN03 (Display Network) or CN21 (Create Network).
  Recreate Missing Assignments: If the assignment is missing, you may need to recreate it. This can be done through the appropriate transaction (e.g., CN21 for creating networks).
  Data Consistency Check: Run consistency checks on the project or network data to identify and correct any inconsistencies.
  Authorization Check: Ensure that you have the necessary authorizations to access and modify the network assignments. Consult with your SAP security team if needed.
  Check Network Status: Review the status of the network to ensure it is not locked or archived. If it is, you may need to unlock or unarchive it to proceed.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CN21 (Create Network), CN22 (Change Network), CN03 (Display Network), and CN41 (Network Overview).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. You can search for relevant notes in the SAP Support Portal.
  Documentation: Review SAP documentation related to project systems and network planning for more detailed information on how to manage networks and assignments.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP support team or a functional consultant who specializes in SAP Project Systems.