No decimal places defined for currency key &

What causes this issue?

A distribution of values using currency key &v1& is to be carried out
for a planning record. The system must recognize the decimal places of
the currency fields for the distribution overflow check. However, no
decimal places are defined for the currency in table TCURX.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

The planning record cannot be transferred because a distribution cannot
take place due to missing decimal places.

How to fix this error?

Error message extract from SAP system. Copyright SAP SE.