&-& reference information missing or data type wrong, see long text

What causes this issue?

Elements of data type CURR or QUAN require reference information. This
information is missing.

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?

Use one of the following annotation to maintain the reference
information:
Semantics.amount.currencyCode
Semantics.quantity.unitOfMeasure

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.