Diagnosis
Using table entries of one field to select another field, the fieldsshould be compatible in type. In this case the mapped fields are notcompatible.
This warning is issued if

• the data types of the fields do not match (i.e. if you map a
character-type field to a numeric field, etc.),

• the lengths of the fields do not match (in this case entries may be
truncated).
In the checked table mapping (Dynamic Mapping Criteria Rule) two linkedfields in the mapping condition are not compatible.
Selects on entries of fields of non-compatible type cannot beprincipially forbidden. It depends on the situation (i.e. the fieldentries) whether the mapping returns the correct results.
The check is on technical level (DDic field information) only.Semantics of the fields cannot be checked.

Procedure
Check whether the mapping makes sense. See the technical informationfor the table and field information.
In case of doubts, check the Subscription Agent log on the mostdetailed log level to see whether the expected results are returned.