I noticed that you posted in the Direct Publisher forum. Please note that Direct Publisher is no longer supported for the Roku platform. If your third-party developer created a Direct Publisher channel, you must convert it to an SDK format.
Are you trying to update a DP or an SDK channel?
FREE Windows desktop software for converting Direct Publisher channels to SceneGraph (SDK), for creating
BIF (Trick Play) files,
Roku (MRSS, JSON) feed files, and
FireTV feed files @
GitHub/rrirower.