Please confirm if workflow can be shared between the companies for PR to PO. Basically, can workflows be centralised in AX 2012 R3. Please advise.
It depends upon the workflow, it has an association that is organisation wide or company specific, but you cannot change this because of how the workflow works. If your workflow is for a specific legal entity your only standard choice is to export it and import it.
Changes to be managed from entity to entity basis (import/export helps), changes cannot be controlled from centralized place in standard ax. This is what I understand from the above comment of yours.
Please advise if centralization of PR/PO workflow can be achieved through development and how complex it would be to develop?
Considering the documents in flow and the possible abilities I would imagine it would be extremely complex. The question you have to ask is what the value add would be and the restrictions imposed by what you are suggesting.
I find this tagging a little rude if I am honest. This puts undue pressure on a volunteer; this is not a one person support forum. Whilst Kranthi does indeed post a tremendous volume for free and is a constant help to people on this forum it should not be an expectation, if you want to hold him to service levels perhaps you should talk direct to him and employ him on a basis you are happy with [:D]
Apologies. It makes sense. I shall keep in mind for next time.