SAP Message 6B109 - Corresp. for offer &1 &1 carried out with corresp. activity &2

Diagnosis
Correspondence activityV3 is used for the correspondence forrental agreement offerV1 v2

Procedure
If you want to know how correspondence activity &V3& is defined, andabove all which letters are sent to which recipients, you can branch toCustomizing from here and find out.