Insufficient authorization. Query is switched to display mode.

What causes this issue?

The query tries to set lock to input data. However, the user that
executes the query has insufficient authorization.

System Response

The query can only run in Display Mode.

How to fix this error?

Check the authorization log after running the query in transaction RSUDO
with log. Grant the necessary authorizations to the user if he/she needs
to run the query in Input Mode. See Note 1234567.

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.