Change exception message
@@ -352,7 +352,7 @@ class OpenStackBaseConnection(ConnectionUserAndKey):
service_type = "compute"
microversion = microversion[0]
else:
- raise LibcloudError("Invalid microversion format.")
+ raise LibcloudError("Invalid microversion format: servicename X.XX")
if self.service_type and self.service_type.startswith(service_type):
headers["OpenStack-API-Version"] = "%s %s" % (
