Diagnosis
You want to create or change an archive information structure and youhave not entered a field catalog.

System Response
You cannot create an archive information structure without a fieldcatalog.

Procedure
Enter a field catalog.
If you first enter an archiving object, then the value help (F4-help)will give you only the field catalogs belonging to this archivingobject.
If you enter a field catalog but no archiving object, then the systemautomatically establishes the archiving object from the field catalog.