Contract is created with vendor for lump sum amount e.g. 50,000 for DG AMC and client pay the amount in advance for 1 year. Now, client can call vendor for n no. of times for services without any payment because he was paid a lump sum amt in advance....

i want to know more about ETO through SAP PS. my requirement is that for RND related activities are handled through project in sap system. ETO is suitable for that? is the BOM usage for RND FG is Engineering/Design.?

PIR is necessary for both FG and SFG incase of 11 gross requirement planning strategy in sap pp . if PIR is not given to sfg it will consider plant stock available for that sfg. please reply.

Can i use byproduct formed during process order further for any other process order as a positive value in BOM so that it will be consumed by MvT 261 , is there any impact of using this from Accounting side?