SAP Message UPB389 - Operation cannot be executed here

Diagnosis
The desired action is not possible with the selected nodes.

Procedure
Planning folders have a fixed structure. This must be taken intoaccount in Customizing actions:
,,- Variables can only be inserted in the variable file.
,,- Planning functions can be linked locally to layouts, or positionedin the file "Global planning functions". This also applies to globalplanning sequences
,,- Layouts can only be in the input area or in the output area.
,,- Other combnations are not possible
,,- Only local functions to input layouts can be assigned to executiontimes.
,,- Only output layouts can also be issued as graphics.
,,- Layouts for "Settings for currency translation" can be inserted inthe input area.