SAP Message AO607 - Variant &1/&2 has cost estimate -transaction not possible

Diagnosis Variant &v2& of appropriation request &v1& has a cost estimate. Forappropriation requests of this kind, it is not possible to manuallymaintain plan values using transactions IMAP, IMAR, and IMAV.Displaying plan values using transactions IMAQ, IMAS and IMAW is alsonot possible. System Response The transaction is not carried out.