Not able to create Epic issue type using Jira REST Java Client (JRJC)

[Shane Mc]

I'm having trouble create issues of type Epic via JRJC. I have managed to add stories and sub-tasks but when I try the same sort of code as the Story for an Epic issue type I get an exception message indicating the field "Epic Name" is required:

Exception in thread "main" com.atlassian.jira.rest.client.RestClientException: Epic Name is required.
at com.atlassian.jira.rest.client.internal.jersey.AbstractJerseyRestClient.invoke(AbstractJerseyRestClient.java:68)
at com.atlassian.jira.rest.client.internal.jersey.AbstractJerseyRestClient.impl(AbstractJerseyRestClient.java:164)
at com.atlassian.jira.rest.client.internal.jersey.AbstractJerseyRestClient.postAndParse(AbstractJerseyRestClient.java:152)
at com.atlassian.jira.rest.client.internal.jersey.JerseyIssueRestClient.createIssue(JerseyIssueRestClient.java:398)

Looking at JIRA it seems this is a custom field (customfield_12601) but it is not obvious how I should set this using the issueBuilder.

Here is an example of what comes back in this field when I make a GET request using REST:

Field{id=customfield_12601, name=Epic Name, type=null, value=Test epic issue}

As per a comment by Alexsander Merzwicki on another thread I tried to using the following but it did not work for me.

IssueInputBuilder.setFieldValue("customfield_12601", "Epic name")

I also attempted the following with no success either:

FieldInput fInput = new FieldInput("customfield_12601", ComplexIssueInputFieldValue.with("value", "Epic name")); 
issueBuilder.setFieldInput(fInput);

Has anyone else managed to do this? Is there any documentation you can direct me to for this? Thanks.

[Shane Mc · Accepted solution]

Sorted!

There was a small typo in my original implementation of Alexsander's suggestion - this is the actual syntax which works:

IssueInputBuilder issueBuilder = new IssueInputBuilder("ProjID", 10L);
issueBuilder.setFieldValue("customfield_12601", "Epic Name");

Thanks Alexsander.