There is a block status &1 for the items listed below.

What causes this issue?

Block status &v1& is set to true on multiple document items. These items
cannot be processed until the reason for the blocking is identified and
eliminated.

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?

Open the documents and check the problematic items. Execute a check on
the document and analyze the messages returned by the check function.
This and the block status type will help you to identify, what is the
reason for blocking the delivery item and act accordingly.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.