Dis-allowing multiple screen operations with same plant
I have a requirement wherein I have a transaction which does the splitting of the bills for customers. The report is when executed sets up a screen wherein we enetr our comapany codes , plant and customer number and when we eneter it takes us to the split screen where we select any UWi and split the bill. I need to add a fucntionality in it wherein if a particular person is already in witha certain plant say 100 , and if another person also wants to perform the operation for plant 100 and he eneters the plant 100 in his selection screen and presses enter , he should be getting a warning message saying that somebody else is already working on this plant. How can we and where can we set up this message to apper or soemting which will warn the other user that somebody is working on a particular plant and so dont enetr that plant as of now.