Failed to get pullrequest of given commit uuid

hi there,
i want to get pull requests of given commit uuid by below url, but i met below error message, however, i can get commit by XXXX.
get commit info (ok)

https://api.bitbucket.org/2.0/repositories/FlexivTeam/flexiv_sw/commit/XXXX

get pullrequests of given commit uuid (faild)

https://api.bitbucket.org/2.0/repositories/FlexivTeam/flexiv_sw/commit/XXXX/pullrequests/

error message

{‘message’: ‘Resource not found’, ‘detail’: “There is no API hosted at this URL.\n\nFor information about our API’s, please refer to the documentation at: REST - Atlassian Documentation”}

:wave: Welcome to the Atlassian developer community! Before I get started, I wanted to recommend giving this guide a read: How To Ask A Good Question ❓. Asking great questions will help them get answered.

Can you link to the documentation that shows how to get the pull requests for a given commit hash? Looking for it here and I do not see anything: REST - Atlassian Documentation

Can you give us a bit more info about why you’re trying to get this info? It might help us recommend a better path.