Diagnosis
When defining a local field, you referred to other local fields eitherfor copying attributes (reference field) or for formulating acalculation formula. One of these local fields used is the field justdefined itself (direct recursion) or it uses the field just defined inits own definition (indirect recursion).
The definition of a local field may not refer to itself.

Procedure
Change the definition of the local field so that there are no morereferences to itself.