"Create Salesforce Object" and "Associate" buttons are not visible in Jira
The buttons to create and associate a Salesforce Object are not visible in the Associations section of the Jira issue.
The user does not have Edit Issue permissions in the project.
Go to the affected project.
Go to Project Settings > Permissions.
Next, click Actions > Edit permissions.
Scroll to Edit Issues permission and click Update.
Select Project Role and select the suitable option to add the user(s) and/or group(s).
With the proper permission granted, the user will be able to view the buttons.