Calculation of value has ended / no goods movements possible

What causes this issue?

You have exited subsequent calculation of value in the system.

System Response

The calculation of value process remains active until the interface is
empty. During this time, you cannot post goods movements.
When there are no material documents left to be valuated, the system
exits the calculation of value process.

How to fix this error?

Wait until the system has exited the calculation of value process.

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.