Before mappings hook
Use this hook to read additional data to construct the context message. The same can be achieved by using the Mapping Type "Function". In a Before Mappings hook you can read multiple values in one go or write more complex conditions. You cannot return a value.
Example
on case tcibd001.kitm
case tckitm.purchase:
tm.tcibd001.description = “Purchased Item: “ & tcibd001.desc
tm.tcibd001.readonly = “false”
break
case tckitm.manufacture:
tm.tcibd001.description = “Manufactured Item: “ & tcibd001.desc
tm.tcibd001.readonly = “false”
break
default:
tm.tcibd001.description = tcibd001.desc
tm.tcibd001.readonly = “true”
break
endcase