SAP PM and SAP MM integration

Hi Gurus,

Can any one explain me in details how the SAP PM and SAP MM are integrated?

Also can I have the MRP integration with the SAP PM, I mean when I create a work order I mention the components that are required for example 100 nuts and bolts, is there a link in SAP PM and SAP MM to the resource planning of the items to be used in the maintenance and if the nuts and bolts are not there can I run the whole MRP and auto PO cycle?

Thanks in advance



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