Release Procedure for Contract and PO in SAP, does it clash?

The Issue

I am having release procedures(with clasification) in contract and Purchase orders.(Both are against Document types only). First i maintained PO's release procedure . For PO i maintained table - field. CEKKO- BSART.
For contract also same table and fields. How can i maintain release procedure for contracts with out any effecting PO's release procedure.

The Solution
You can use the same Release Group because they share the same release Table, CEKKO-BSART for all Purchasing Documents. These includes Purchase Orders, Contracts, and other Agreements.
However, it will not clash because PO and Contract have different document types.
For example, in PO document type will be NB, FO. Whereas for Contract it will be WK,MK.
So in SPRO under release strategy, you will have strategies for the NB and FO document types for Purchase Order. As for Contracts, you will have your own set of strategies for MK, WK, with the same Release Group.

Source: http://forums.sdn.sap.com/thread.jspa?threadID=1669433&messageID=9022137#9022137