No JIT components group type found for values specified

What causes this issue?

The comonents group has not been assigned to a components group type
(table JITPG). Every components group must refer to a components group
type.

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?

Either specify a components group type in the <DS:TRAN.JITV>JIT basic
data</> (transaction JITD/JITP) for the following parameters, or check
the entries or the IDoc conversion.
JIT customer : &V1&
Unloading point : &V2&
Installation point : &V3&
Components group material : &V4&
Please use upper and lower case characters correctly!

Error message extract from SAP system. Copyright SAP SE.