Order cannot be checked

What causes this issue?

User &V1& started mass processing. To avoid a conflict with the orders
in mass processing, you are not allowed to change the order as long
as mass processing is still running.

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 repeat the check once mass processing has finished. You can find
information on the mass process via the information center or
the process monitor.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.