Specifying the type of access

For an existing (OLD) permanent object, you must specify how you intend to access the object. You specify your intentions through the access_mode parameter:

If you intend to only read the object, specify READ for access_mode.
If you intend to update the object, specify UPDATE for access_mode.

For a new permanent object and for a temporary object, window services assumes you will update the object and ignores the value you specify for access_mode.