No more than & items possible in accounting document

What causes this issue?

For this <GL:material_document>material document</> an
<GL:accounting_document>accounting document</> containing more than the
maximum number (&V1&) of items would have to be created.

System Response

The system cannot post the material document.

How to fix this error?

Enter the material document items in different material documents, so
that fewer posting lines are created for the associated accounting
document.

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.