If I did not have the version line it only got a simple 500 (DataPower not aware of the policy yet - only the catalog import was done).
Adding the version line got me a better error:
"httpCode": "500",
"httpMessage": "Internal Server Error",
"moreInformation": "Error opening URL 'local:///policy/e615ca5a40cf270e49d5c10f3/circuit-breaker-slm-clustered_v1.0.0/check.xsl'"
If I did not have the version line it only got a simple 500 (DataPower not aware of the policy yet - only the catalog import was done).
Adding the version line got me a better error: "httpCode": "500", "httpMessage": "Internal Server Error", "moreInformation": "Error opening URL 'local:///policy/e615ca5a40cf270e49d5c10f3/circuit-breaker-slm-clustered_v1.0.0/check.xsl'"