How To Fix LD063 - Error calculating longest path. Path cannot be displayed

SAP Error Message - Details

• Message type: E = Error

• Message class: LD - Logistics Automotive Line Design

• Message number: 063

• Message text: Error calculating longest path. Path cannot be displayed

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 LD063 - Error calculating longest path. Path cannot be displayed ?

  The SAP error message LD063, which states "Error calculating longest path. Path cannot be displayed," typically occurs in the context of logistics and production planning, particularly when dealing with network planning or project management in SAP. This error indicates that the system encountered an issue while trying to calculate the longest path in a network or project structure.
  Causes:
  
  Data Inconsistencies: There may be inconsistencies or missing data in the network or project structure, such as missing relationships between activities or incorrect duration values.
  Circular Dependencies: If there are circular dependencies in the project or network, the system may not be able to calculate the longest path.
  Incorrect Configuration: Configuration settings in the project management or network planning module may not be set up correctly.
  Technical Issues: There could be underlying technical issues, such as database inconsistencies or problems with the SAP application server.
  
  Solutions:
  
  Check Data Integrity: Review the network or project structure for any missing or incorrect data. Ensure that all activities have valid relationships and that durations are correctly defined.
  Identify Circular Dependencies: Look for any circular dependencies in the project. If found, restructure the project to eliminate these dependencies.
  Review Configuration Settings: Ensure that the configuration settings for the project management or network planning module are correctly set up. This may involve checking settings in transaction codes like OPU1 (for project management) or similar.
  Recalculate the Network: Sometimes, simply recalculating the network or project can resolve the issue. You can do this by using the appropriate transaction code (e.g., CN41 for project networks).
  Check for SAP Notes: Look for any relevant SAP Notes that may address this specific error. SAP frequently releases notes that provide fixes or workarounds for known issues.
  Consult SAP Support: If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance. They may provide specific guidance based on your system configuration and version.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CN41 (for network planning) or CJ20N (for project management) to navigate and troubleshoot effectively.
  SAP Documentation: Review SAP documentation related to project management and network planning for best practices and troubleshooting tips.
  User Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify the cause of the LD063 error and implement a solution to resolve it.