Budget check for Material Reservation from PM Orders

Hi All,

We are planning to implement budget check at Material Reservation stage. we are upgrading from 600 to 607.

What I understand from SAP Note :1321375 is that Program RFFMRP_MAT_RESERVATION will create Earmarked document after PM Order is created. We want to check reservation before PM order is created. if Budget is not there, reservation and PM Order should not be created.

Please advise

Lincy