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

CY658 - Overview

• 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