Restrict view and use of Expenditure type

Summary:

Hi team,

We have 300 plus expenditure types which are tagged to reference data set. The user when creating the project related PO/PR/AP transactions is getting confused about which expenditure type to select from the so many available options of expenditure types. 

The User wants that while creating the PR/PO/AP transactions, he should be able to view only certain fixed number (say 3 or 4) expenditure types. When the inclusive transaction controls are defined for the project, they only the debar the booking of booking of expense using expenditure types other than the ones defined in the transaction control but give a full view of all the 300+ expenditure types in the LOV.