You do not have authorization to change the data (only display)

What causes this issue?

You have attempted, in change mode, to access data which you are not
authorized to change. You can only display this data.

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 can either acknowledge this message and display the data, or cancel
processing.

Error message extract from SAP system. Copyright SAP SE.