Dot '.' and Dash '-' characters are supported by using the _DoT_ and _DasH_ keywords in Avro schemas. But other characters, e.g. Colon ':' are not supported.

Ref https://gerrit.onap.org/r/gitweb?p=policy/apex-pdp.git;a=blob;f=plugins/plugins-context/plugins-context-schema/plugins-context-schema-avro/src/main/java/org/onap/policy/apex/plugins/context/schema/avro/AvroSchemaKeyTranslationUtilities.java;h=9654572065918dbbd3cdf49dd14bce699f255735;hb=HEAD