Problem

An entity created (mostly via API) does not appear in Reltio UI search, but the same entity JSON can be retrieved in a get entity API response.

Solution

Invisibility to a Reltio UI search can be an issue when the entity system attributes for start date (startDate) and end date (endDate) values were populated, but the user provided a future date value in long number format.

https://docs.reltio.com/entitiesapi/getentity.html 

To resolve this, check the start date and end date values and compare them with the current date. Start and end dates are defined as follows:

Start date: The start date that the entity or relation became (or will become) active in the system.

End date: The end date that the entity or relation stopped (or will stop) being active in the system. 

Even when the end date is a future date, the start date should not be a future date in order for an entity to be active. If an entity's start date is a future date, then the entity is considered inactive.