Hi Kiran - Thanks for this question. I have seen few customers using custom built UI along with Reltio APIs to create entities. However the solution approach may need to vary case to case to depending on the requirements.
We are planning to improve the user experience around Reltio UI while user is trying to create a new entity. We would like to know more about the challenges you are facing around hierarchies/relationships. I would reach out separately over an email.
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Abhradeep Sengupta
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