Hibernate OGM currently only create indexes in Neo4j if they involved a single porperty. The reason is that when we added the feature this was the only constraint available.

In the latest version is possible to create unique constraints spanning multiple properties.
To solve this issue see:

• BaseNeo4jSchemaDefiner#addCoinstraint: https://github.com/hibernate/hibernate-ogm/blob/master/neo4j/src/main/java/org/hibernate/ogm/datastore/neo4j/impl/BaseNeo4jSchemaDefiner.java#L112
• UniqueConstraintTest: https://github.com/hibernate/hibernate-ogm/blob/master/neo4j/src/test/java/org/hibernate/ogm/datastore/neo4j/test/mapping/UniqueConstraintTest.java

This issue involves embedded, http and bolt Neo4j