SAP Message 3G299 - Special Processing of the Posting Item is not Permitted

Diagnosis
The special processing posting items 'only actual posting' and 'onlycost planning' are only useful if there is an expense account for theassigned symbolic account. The symbolic account &V1&, however, hasthe account assignment type &V2&.

System Response
The assignment of this special processing flag is not allowed forposting to this symbolic account.