Service PO Amendment

Hi SAP Experts,

Greetings to all...

I wish to ask following question:

I have created a service PO for 100Rs and posted the Service Entry Sheet for this. Later I changed the purchase order to 120 Rs. Now when I am trying to post the MIRO of the PO the system is not letting me to post the PO because of the tolerance (FYI - I have set the tolerance as zero and set the message M8083 as error message).

Where as the same is working with the material PO.

I create a material PO for 100Rs and posted GRN. Later I changed the PO price to 120 Rs. When I post the MIRO for 120 the system doesnt show me error message because of the tolerance.

Please note in both of the cases (service and material) service based IV and GR Based IV is ticked.

So I would like to ask why the behaviour of service po is not same as material PO as far as tolerance is concerned.

Please suggest if I can do something to post the service po same as material po.

Thanking you in advance,

Regards,

Uday Kumar.