Hi Sudip Bala,
Thank you for posting query in Microsoft Q&A Platform.
It seems, at some point of there is some miss configuration happened. If possible, kindly disconnect your repo and try to connect to different repo freshly, while connection to repo make sure to select import all existing resources option. This should help to get all resources added to repo branches.
Hope this helps. Please let me know if any further queries.
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button. Accepted answers help community as well.