In the Procurement Managent KA, the project management plan which includes Procurement management is an input to Conduct Procurement , Administer Procurement and Close Procurement Precesses. I underatsnd that the procurement management plan will be used even these processes has PM Plan as input.

My Question is:

Why Procurement Management Plan was not directly taken as an Input? Why should be the PM plan which is a indirect Procurement Management Plan?

Any light on this will be appreciated.

Thanks

Jai