Hi,
Not sure, what report you are referring to!
But you are referring purchasing document for MM/Procurement and PM- Plant maint, then refer transaction code ME2N and get list of purchase order for MM/Procurement and PM- Plant maint by entering separate purchase order document type in selection criteria.
Furthermore, if needed consumption report – can refer MCRE and also refer transaction code S_P00_07000139 for material movement in a report form.
For more, you can refer SCN blog for SAP Standard Reports
http://wiki.sdn.sap.com/wiki/display/ERPLO/SAP+Standard+Reports
Regards,
Biju K