Versions are case sensitive when making REST api calls

During version creation, JIRA considers versions to be case insensitive. That is JIRA sees both TesT and test to be the same. If TesT already exists as a project version, then the admin cannot create a test version.

During a REST call, however, when you make a reference to a version, you must match it's casing exactly.

For example, making a REST call to TesT version will work fine, but making a call to test version will result in:

{"errorMessages":[],"errors":{"versions":"Version name 'test' is not valid"}}