How To Fix CN387 - Deblock acc. assignment in operation &1 rejected, as network &2 blocked

SAP Error Message - Details

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 387

• Message text: Deblock acc. assignment in operation &1 rejected, as network &2 blocked

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CN387 - Deblock acc. assignment in operation &1 rejected, as network &2 blocked ?

  The SAP error message CN387 indicates that there is a problem with the account assignment in a network operation due to the network being blocked. This typically occurs in the context of project systems or production planning where network activities are involved.
  Cause:
  The error message CN387 is triggered when:
  
  The network (identified by &2) is in a blocked status, which prevents any further processing or changes to the account assignments of the operations within that network.
  This blocking can occur due to various reasons, such as:
  
  The network is set to "Blocked" status manually by a user.
  The network is part of a project that is in a blocked state.
  There are outstanding issues or errors in related documents that need to be resolved before the network can be unblocked.
  
  
  
  Solution:
  To resolve the CN387 error, you can take the following steps:
  
  
  Check Network Status:
  
  Go to the network in question (using transaction code CN03 or CN21) and check its status. If it is blocked, you will need to unblock it.
  
  
  
  Unblock the Network:
  
  If you have the necessary authorizations, you can change the status of the network from "Blocked" to "Released" or "Open". This can usually be done in the network maintenance screen.
  
  
  
  Review Related Documents:
  
  Check for any related documents (such as purchase orders, production orders, or other project-related documents) that might be causing the network to be blocked. Resolve any issues found.
  
  
  
  Consult with Project Manager:
  
  If you are unsure why the network is blocked, consult with the project manager or the person responsible for the project to understand the reason for the block.
  
  
  
  Check for Authorizations:
  
  Ensure that you have the necessary authorizations to make changes to the network status. If not, you may need to contact your SAP administrator.
  
  
  
  SAP Notes and Documentation:
  
  Check for any relevant SAP Notes or documentation that might provide additional insights or solutions related to this error message.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like CN03 (Display Network), CN21 (Create Network), and CN22 (Change Network) for managing networks.
  SAP Project System (PS): Understanding the Project System module can help in managing networks and their statuses effectively.
  Error Handling: Familiarize yourself with general error handling procedures in SAP, as similar issues may arise in different contexts.
  
  By following these steps, you should be able to resolve the CN387 error and proceed with the necessary account assignments in the network operation.