Hello All,
I am new to Jira. Pleae help me or guide me to create autoincrement alpanumeric value custom field in jira
Are you asking about how to programatically do it or just in Jira UI? If second then you might consider checking this Atlassian community for users because this is a place for questions realated to development for Atlassian platforms.
If your question related to development which platform are you developing for: cloud or server?