Trigger Shadow Merge Branch on Pull Request not matched by any branch specification

[ivan1767p]

Please show value "branch specification (TeamCity)". I tryd many variant, like

+:*
+:refs/heads/*
+:refs/pull-requests/*
+:refs/pull-requests/*/merge
+:refs/pull-requests/*/from

But get error: "The build was triggered in the branch pull-requests/100 which does not correspond to any branch monitored by the build VCS roots (the branch is either closed or excluded / not matched by any branch specification). Because of that default branch revisions were set to this build."

Settings Trigger Hook

Environment:
TeamCity Professional 2020.2.4 (build 86063)
Atlassian Bitbucket v7.6.3
TeamCity Remote Trigger Hook Version: 4.10.1

[ivan1767p]

Not relevant