Starting sync from the issue view responds with the following error message:
The problem occurs when starting sync for an issue that does not belong to one of the projects specified in the local Connection Sync Rules.
For example, when you create a local connection between project A and project B and then try to sync an issue from project C. In this case, the sync will be unsuccessful and the mentioned error will occur.
Every issue includes a Sync panel on the issue view. Please, make sure to select the correct Connection when starting sync from the issue view.