Enter document assignments for technical delivery terms

What causes this issue?

You have not specified any documents containing technical delivery terms
for the material. However, the chosen tax key requires them for QM
inspection.

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?

Assign one or more documents containing technical delivery terms to the
material.

Error message extract from SAP system. Copyright SAP SE.