Properties of element '&1' are inconsistent

What causes this issue?

The internal status of element &V1& is invalid, in particular, the
attribute indicators contradict the actual state of the element.

System Response

Access to this element is not possible.

How to fix this error?

This is an internal error.
Enter a message that allows this error to be reproduced.

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.