How To Fix CY658 - GANTT chart: function & not possible

SAP Error Message - Details

• Message type: E = Error

• Message class: CY - Capacity Requirements Planning

• Message number: 658

• Message text: GANTT chart: function & not possible

What causes this issue?

The function triggered from the Gantt chart is not supported in this
application.

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?

You should check your last action. Check the documentation to see if
your procedure is permitted.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CY658 - GANTT chart: function & not possible ?

  The SAP error message CY658, which states "GANTT chart: function & not possible," typically occurs in the context of using GANTT charts in SAP Project System (PS) or Production Planning (PP) modules. This error can arise due to various reasons, and understanding the cause is essential for finding a solution.
  Causes:
  
  Missing Authorizations: The user may not have the necessary authorizations to perform the action related to the GANTT chart.
  Incorrect Data: The data being processed may be incomplete or incorrect, leading to the inability to display or manipulate the GANTT chart.
  System Configuration: There may be issues with the configuration settings in the SAP system that prevent the GANTT chart from functioning correctly.
  Technical Issues: There could be underlying technical issues, such as system bugs or performance problems, that affect the GANTT chart functionality.
  Object Locking: The object you are trying to access may be locked by another user or process, preventing you from performing the desired action.
  
  Solutions:
  
  Check Authorizations: Ensure that the user has the necessary authorizations to access and manipulate the GANTT chart. This can be done by reviewing the user's roles and permissions in the SAP system.
  Validate Data: Review the data associated with the project or production order to ensure that all required fields are filled out correctly and that there are no inconsistencies.
  Review Configuration: Check the configuration settings related to the GANTT chart in the SAP system. This may involve consulting with a system administrator or SAP consultant to ensure that everything is set up correctly.
  Technical Support: If the issue persists, consider reaching out to your SAP support team or consulting SAP Notes for any known issues or patches related to the GANTT chart functionality.
  Check for Locks: Use transaction codes like SM12 to check for any locks on the objects you are trying to access. If you find locks, you may need to wait for them to be released or contact the user who has locked the object.
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error message or provide additional troubleshooting steps.
  Documentation: Review SAP documentation related to GANTT charts in the Project System or Production Planning modules for more context on how to use these features effectively.
  Community 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 CY658 error and implement a suitable solution. If the problem continues, further investigation may be necessary, potentially involving SAP support.