What is the name of BAPI or Function module to change and cacel the SRM PO
Any one can please tell me what is the name of BAPI or function module name to change the SRM Purchase Order. For creating the PO I know the BAPI. There are some function modules BBP_PD_PO_CREATE and BBP_PD_PO_UPDATE, but I dont know wether these are correct and I dont know how to use these. If these are the correct function module, please tell me how to use these.
Thanks & Regards,