How To Fix CY657 - GANTT chart: function triggered

CY657 - Overview

• Message type: E = Error

• Message class: CY - Capacity Requirements Planning

• Message number: 657

• Message text: GANTT chart: function triggered

What causes this issue?

You selected the function "Back" in the Gantt chart.

System Response

You exit the Gantt chart. You return to the screen from which you called
up the Gantt chart.

How to fix this error?

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CY657 - GANTT chart: function triggered ?

  The SAP error message CY657, which states "GANTT chart: function  triggered," typically occurs in the context of using the GANTT chart functionality in SAP Project System (PS) or similar modules. This error can arise when a user attempts to navigate back in the GANTT chart interface, and it may indicate that the system is unable to process the request due to various reasons.
  Possible Causes:
  
  Navigation Issues: The user may have attempted to navigate back to a previous screen or state that is no longer valid or available.
  Session Timeout: The user session may have timed out, leading to an inability to perform further actions.
  Data Integrity Issues: There may be issues with the underlying data that the GANTT chart is trying to display, such as missing or inconsistent project data.
  System Configuration: There may be configuration issues in the SAP system that affect how the GANTT chart functions.
  User Authorizations: The user may not