The sample & for this item cannot be changed

What causes this issue?

You are trying to assign a different sample to an item that
already exists in the testing schedule. However, this is not the
sample with which the testing schedule item was created. This
is not allowed.

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?

Change the value for the sample back to the original
value.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.