Field & in table & has a different data format

What causes this issue?

You want link the characteristic to field &v1& in another table.
However, this is only possible if field &v1& has the same format in
both tables. The field format in the two tables is different.
The format of field &v1& in table &v2& is inconsistent with the format
of characteristic &v3&.

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?

Delete your entries. Create a reference to a table field that has the
same format as characteristic &v3&.

Error message extract from SAP system. Copyright SAP SE.