[UPDATE] This is an erratic bug. If you encounter it, there are a **few potential workarounds**:
* just wait a few minutes before trying, and it should un-stick itself as the jobqueue catches up
* or re-mark the page for translation: Make a dummy edit (i.e. add or remove an empty line) on the source page. Mark for translation. Wait a few seconds. Now resuming translations should work.
* or play with Special:AggregateGroups,
* or ask a person with server access to run the `Translate/scripts/createMessageIndex.php` script.
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[Original task description. Initial example has fixed itself.]
When I try to add a translation, or change an existing translation, I get the error `Saving the translation failed: This namespace is reserved for content page translations. The page you are trying to edit does not seem to correspond any page marked for translation.`
at https://meta.wikimedia.org/w/index.php?title=Special:Translate&group=page-Global+Reach%2FAnnouncements%2FBahasa+Indonesia+Search+Pilot+FAQ&action=page&filter=&language=id
I've tried using "remove from translation" and re-setting it, but that didn't fix it.
There was an earlier user-error where translation-markers were manually added, but I've never seen that issue lead to this problem before.
{F28678926}