A parsing error of the dmn xml has the same BAD_REQUEST response.

/dmn/verification
-> for all verifications
/dmn/verification/type
-> list types
/dmn/verification/type/{typeName}
-> only verification for typeName
/dmn/verification/classification
-> list all classifications
/dmn/verification/classification/{classificationName}
- > all verifications for named classification

for singleton for verification type and classification type