How To Fix TFC0150 - Use of monitor (GANTT chart) is not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: TFC0 - Messages in FC

• Message number: 150

• Message text: Use of monitor (GANTT chart) is not allowed

What causes this issue?

You have deactivated the use of the monitor (GANTT chart) in your user
master data (parameter CLOCO_NO_GANTT). This is usually done to boost
performance.
Therefore, you cannot use the monitor with your user name.

System Response

The switch to the monitor will not be carried out.

How to fix this error?

Either use the list display only, or activate the use of the monitor
(parameter CLOCO_NO_GANTT = ' '). After activating this option, you will
need to restart the transaction.

Procedure for System Administrators

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.