We have all settings to connect our OS app and Jira, in fact this connection was successful with the JiraconnectorDEMO, but when we try to connect Jira with our OS app a new public key is required. Also, we think we need to configure a private key in our OS app, but we are not sure.

How could we get/generate a valid Public and private Keys for this connection?

I really appreciate your help.

Have you looked at this thread, from the JIRA Connector support forum?

https://www.outsystems.com/forums/discussion/42790/basic-authentication-for-jira-rest-api-is-deprecated-by-atlassian/

Also, might be worth posting your question in the support forum for the JIRA connector, since that will notify the team that maintains the component:

https://www.outsystems.com/forge/component-discussions/936/JIRA+Connector