I am not able to create jira ticket with custom fields using JIRA Rest API

[Aziz Mohammed]

I am not able to create jira ticket with custom fields using JIRA Rest API, getting 400 missing mandatary fields, if add those fields getting anther issue like....

{

    "errorMessages": [],

    "errors": {

        "customfield_18102": "Field 'customfield_18102' cannot be set. It is not on the appropriate screen, or unknown."

    }

}

please provide me the solution.

[Ashish Gupta]

Welcome to the Atlassian Community @Aziz Mohammed,

As you are trying to create an issue with a particular custom field, please make sure that the custom field is added to the Create Screen associated with the issue type in that project.

In order to confirm it, you may navigate to (Project Settings-->Issues-->Screens). Once on the screens page, you need to review the Create Issue Screen for that particular issue type and make sure that the custom field is added to it.

The same would be applicable if you will try to update the issue using Rest API i.e. the field needs to be configured in the Edit Screen to update it.