# "There was a problem saving channel mappings. Please try again."

**URL:** <https://forums.plex.tv/t/there-was-a-problem-saving-channel-mappings-please-try-again/912092>\
**Category:** Live TV & DVR\
**Tags:** livetv-dvr, server-docker\
**Created:** [April 7, 2025, 3:50am UTC](https://forums.plex.tv/t/there-was-a-problem-saving-channel-mappings-please-try-again/912092 "2025-04-07T03:50:51Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Nitro981](https://avatars.discourse-cdn.com/v4/letter/n/51bf81/32.png) [@Nitro981](https://forums.plex.tv/u/Nitro981)\
**Post date:** [April 7, 2025, 3:50am UTC](https://forums.plex.tv/t/there-was-a-problem-saving-channel-mappings-please-try-again/912092/1 "2025-04-07T03:50:51Z")

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Server Version#: 1.41.6.9606  
Player Version#:  
Tuner Make/Model: HDHomeRun PRIME  
Guide/Lineup name: Fios  
Using XMLTV?: No  
Channel number/Name:

I am attempting to setup my tuner in Plex. Plex finds the tuner immediately, sees the channels, and maps all of the guide listings. When attempting to save, I get an error that there was a problem saving channel mappings.

This error persists whether I try to save from my local Plex instance (running on Docker) or from hosted interface at app.plex.tv. I can save individual channels if I try one at a time, but I cannot save the entire guide.

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**Author:** ![pshanew](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/pshanew/32/160555_2.png) [@pshanew](https://forums.plex.tv/u/pshanew)\
**Post date:** [April 7, 2025, 4:00am UTC](https://forums.plex.tv/t/there-was-a-problem-saving-channel-mappings-please-try-again/912092/2 "2025-04-07T04:00:46Z")

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Ensure you don’t have the same guide data (EPG channel, right-hand column) mapped to more than one tuner channel (left-hand column) in the channel mapping dialog. If you do, it will fail to save since each EPG channel can only be used once.

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**Author:** ![Nitro981](https://avatars.discourse-cdn.com/v4/letter/n/51bf81/32.png) [@Nitro981](https://forums.plex.tv/u/Nitro981)\
**Post date:** [April 7, 2025, 4:02am UTC](https://forums.plex.tv/t/there-was-a-problem-saving-channel-mappings-please-try-again/912092/3 "2025-04-07T04:02:01Z")

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I checked that, too. Every channel has a 1:1 mapping from the guide.

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**Author:** ![system](https://global.discourse-cdn.com/plex/original/3X/2/a/2acb9765406f63293d357b4ec509ec39aa28f2ad.png) [@system](https://forums.plex.tv/u/system)\
**Post date:** [July 6, 2025, 4:02am UTC](https://forums.plex.tv/t/there-was-a-problem-saving-channel-mappings-please-try-again/912092/4 "2025-07-06T04:02:50Z")

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