Error! Resource not found! when associating in JIRA
When associating a Salesforce record in JIRA, the error "Error! Resource not found!" appears on the screen. In addition, users are unable to configure the Association Configuration.
Salesforce JIRA Cloud Connector
Check whether the edit-issue permission of that project contains the project role atlassian-addons-project-access
Navigate to <base-url>/jira/people/557058:3e2ef232-d5c4-4c0e-94b0-977a305ebaae
Click on the menu via the 3 dotted lines (...) and select Manage Access
Click on ... and select View Jira project Roles
Check whether the Salesforce JIRA Integration user is part of the role atlassian-addons-project-access for all projects
The installation process of the connector did not complete properly.
Re-install the connector and make sure that the role atlassian-addons-project-access is on every permission.