Custom Issue type can't be imported in JIRA 6.2.7

Question

We created couple of custom issue type in JIRA 6.2.7, then import a  CVS file which includes custom issue type, got error like:

Unexpected failure occurred. Importer will stop immediately. Data may be in an unstable state
java.lang.NullPointerException
	at com.atlassian.jira.plugins.importer.imports.importer.impl.customfields.CustomFieldsUtil.createOptionIfDoesNotExist(CustomFieldsUtil.java:215)
But if we import default issue type within in JIRA, like Bug, New Feature, then it works well.

Shayne _Atlassian_ · Answer

I recently ran into this issue and found we needed to correct the Issue Type associations for pre-existing Custom Fields the CSV was trying to populate. Here is the KB article with resolution steps:

https://confluence.atlassian.com/display/JIRAKB/Incorrect+Issue+Type+Configuration+for+Custom+Fields+Stops+CSV+Import

Shayne Covey

Ellen Chen · Answer

Thanks Pedro for your answer.

Those custom issue types are in the project which I tried to import. Also I know I can use bulk change to change issue type too which is  walkaround. But I would like to find out why those custom issue type doesn't work, thanks!

Pedro Souza · Answer

Make sure that you have these custom issue types for this project that you're trying to import the CSV file.

If you have, try to import with the default issue type, then perform a bulk edit, moving to the custom issue type.

See here:

https://confluence.atlassian.com/display/JIRA/Modifying+Multiple+(Bulk)+Issues

Cheers,

Pedro Souza.