Diagnosis
The item &V2& cannot be dunned as part of the dunning proposal forinsurance.
The item was posted in the company code &V1&. This company code is setup for dunning in accordance with the collection strategy due to thegrouping setting (Group by field ).
Collection strategies are not supported in insurance dunning.

Procedure
To avoid this error message, restrict the selection of the mass activityto the company codes for which no grouping is defined.
You can dun documents that should be dunned in accordance with thecollection strategy using the dunning proposal run of Contract AccountsReceivable and Payable (transactions FPVA and FPVB).