This is very little information but my first guess is that IBM web server auto redirects is configured. Please follow below link for more details;
https://www.ibm.com/docs/en/b2b-integrator/5.2?topic=nsp-enable-auto-redirect-https
Another thing could be the problem faced in the below post, the person who posted the problem has shared his solution for the issue in the last comment:
https://moremaximo.com/communities/community-home/digestviewer/view-question?ContributedContentKey=7be2d2f5-a12d-44e1-a87e-c244e4b51efa&CommunityKey=784e8753-d7af-4281-8463-e86f3b5d7076
Also, I would review my steps from a good blog or document. Below post from Alex is a great resource for SSL configuration:
https://moremaximo.com/blogs/alex-walter1/2020/04/23/maximo-ssl-https-configuration?hlmlt=QT