SAP Message AQ268 - HR InfoSet: Field & cannot be included in field group &

Diagnosis
You attempted to include a field in a field group that already containsfields for another table. This is not possible in the area of HR sincethe queries cannot otherwise be generated correctly using this InfoSet.

System Response
The required action could not be carried out.

Procedure
Field groups in HR InfoSets must only contain fields from one infotype. Please ensure that fields for a table are in exactly one fieldgroup.