Java Jira REST Client - Error Parsing time

Jira Development
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1

Code:

private static final DateTimeFormatter JIRA_DATE_FORMATTER = ISODateTimeFormat.date();

org.joda.time.DateTime dateTimeField

issueInputBuilder.setFieldInput(new FieldInput(CUSTOM_FIELD_PREFIX + customFieldName, JIRA_DATE_FORMATTER.print(dateTimeField)));

Error:

RestClientException{statusCode=Optional.of(400), errorCollections=[ErrorCollection{status=400, errors={customfield_10702=Error parsing time: 2017-04-08}, errorMessages=[]}]}