An issue does not get synchronized and appears in the troubleshooting section with the category 'Incompatible message format' and the message, e.g. 'Can not deserialize instance of java.lang.Integer out of START_OBJECT token at [Source: N/A; line: -1, column: -1]'.
The message format has been changed between the time of sending and consuming the change. This might be due to the following reasons:
- You've changed a field mapping from Passthrough Value Mapping to Priority Value Mapping or vice versa.
- You've changed a field mapping from Passthrough Value Mapping to Single/Multi/Cascading Select Value Mapping or vice versa.
- The same error might occur for other cases where you've changed the mapping for a field.
Please perform a resync for the affected issue(s) from the sender project to the receiver project.