ISO Broadcaster fails silently on unsupported RTN/SDU_Interval combination

[GatCode]

When a user selects a specific RTN/SDU_Interval combination in the ISO_BROADCAST sample, broacaster fails without an error message. The user doesn't know what has happened.

As @Thalley suggested, a short error message would be nice to have.

Note: tested on two nRF52840DK boards with the code of the following draft PR: #46187

[Thalley]

The error seen is that no ISO data is seemingly received on the sync receiver, right @GatCode ?

[GatCode]

Exactly, only the BigInfo is printed on the receiver side.
Additionally the output on the sender side is exactly the screenshot above but it should print Sending value ... every second.

[Thalley]

Exactly, only the BigInfo is printed on the receiver side. Additionally the output on the sender side is exactly the screenshot above but it should print Sending value ... every second.

So at least the periodic advertisement seems to be fine. From your log, it seems that just the BIG sync never completes.