Note
Upload PBL is only supported in the workspace format.
Starting from version 2022, the PBL files no longer need to be uploaded to the source control server, because they will be automatically generated using the source code downloaded from the source control server (when executing the "Connect to Workspace/Solution" and "SVN Update" operations).
The "Upload PBL" menu is preserved for projects that have been managed and upgraded from the earlier versions.