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This can, of course, be combined with a UUID to secure firewall openings ie: rest/restfulintegrator/1.0/incoming/files/014aed18-c4d2-4166-9745-39648cce64e9
From Jira 10 you must add the header to the request to the incoming URL.
X-Atlassian-Token
with the value no-check
For instance if we are using postman then to post to iHub then this header needs to be added.
Error you get if this is not included is XSRF check failed
Using incoming files in iHub actions
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