Diagnosis
Function module &V1&, used to determine the differentiatingcharacteristics in IS-RE correspondence, is assigned to correspondenceapplication '&V2&' and country '&V3&'.
However, this function module does not exist.

Procedure
Either create a function module with the name &V1&, or assign anexisting function module to correspondence application '&V2&' andcountry '&V3&' in Customizing.
To do this, refer to the following documentation:
Correspondence for a rental agreement offer:
More information about thesefunction modules
Correspondence for a rental agreement:
More information about thesefunction modules