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REST API, POST customer request failed

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I'm trying to create customer in business central using REST API with postman.
  1. I got token using OAuth2/Microsoft Entra Authentication.
  2. Dynamics 365 Business Central have /API.ReadWrite.All/ permission in azure portal.
  3. Client ID/Application have ADMINISTRATOR, D365 FULL ACCESS permission in Business Central -> Microsoft Entra Application
Get request to https:/ works fine but post request returns: 
400 Bad Request
    /error/: {
        /code/: /Internal_ServerError/,
        /message/: /Sorry, the current permissions prevented the action. (TableData 5050 Contact Insert: Base Application)  CorrelationId:  09bb1b44-5240-47d4-9e1e-55ea966ef3f9./
What am I doing wrong? Where should I set required permissions?