Dear expert:         By t-code me31k, Create two service contracts document whose material group in contact item are same. the material group is 007 ( services ).  the different is services master data of service line in document，one service number o...

Dear expert:       When create purchase requisition with item category ' ' or purchase requisition with item category 'U' by t-code ME51N, Click button "availability" in source of supply tab, the system doesn't have any response and doesn't display a...