How To Fix CU064 - Error when loading network; start network generation

SAP Error Message - Details

• Message type: E = Error

• Message class: CU - Variants / configuration messages

• Message number: 064

• Message text: Error when loading network; start network generation

What causes this issue?

An error occurred loading the net.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

To generate the net, choose <LS>Dependency net -> Generate</>. All
internal data is reconstructed. This may resolve the error.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CU064 - Error when loading network; start network generation ?

  The SAP error message CU064 typically occurs during the generation of a network in the Project System (PS) module. This error indicates that there is an issue with loading the network, which can be caused by various factors. Below are some common causes, potential solutions, and related information for this error:
  Causes of CU064 Error
  
  
  Missing or Incomplete Data: The network or its components (activities, relationships, etc.) may have missing or incomplete data that prevents successful loading.
  
  
  Incorrect Configuration: There may be configuration issues in the project system settings that affect network generation.
  
  
  Authorization Issues: The user may not have the necessary authorizations to create or modify networks.
  
  
  System Performance Issues: If the system is under heavy load or if there are performance issues, it may lead to timeouts or failures in loading the network.
  
  
  Inconsistent Data: There may be inconsistencies in the data related to the project or network, such as invalid relationships or incorrect dates.
  
  
  Solutions to CU064 Error
  
  
  Check Data Completeness: Review the network and its components to ensure that all required fields are filled out correctly. Pay special attention to activities, relationships, and dates.
  
  
  Review Configuration Settings: Check the configuration settings in the Project System to ensure they are set up correctly. This may involve consulting with a functional consultant or system administrator.
  
  
  Verify Authorizations: Ensure that the user has the necessary authorizations to create or modify networks. This can be checked in the user roles and profiles.
  
  
  System Performance Monitoring: Monitor the system performance to identify any bottlenecks. If the system is slow, consider optimizing performance or running the process during off-peak hours.
  
  
  Data Consistency Check: Use transaction codes like CJ20N (Project Builder) to check for inconsistencies in the project data. Correct any issues found.
  
  
  Debugging: If the error persists, consider debugging the process to identify the exact point of failure. This may require technical expertise.
  
  
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error. There may be patches or updates available.
  
  
  Related Information
  
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CJ20N (Project Builder), CJ02 (Change Project), and CJ01 (Create Project) for managing projects and networks.
  
  
  SAP Documentation: Refer to the official SAP documentation for Project System for detailed information on network generation and troubleshooting.
  
  
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  
  
  If the error persists after trying the above solutions, it may be beneficial to involve your SAP support team or a consultant with expertise in the Project System module for further assistance.