Thank you for posting this in Microsoft Q&A.
As I understand you want to know how many maximum number of claims that can be configured in token returned by Entra ID.
Microsoft Entra ID limits the number of object IDs that it includes in the groups claim to stay within the size limit of the HTTP header. If a user is a member of more groups than the overage limit (150 for SAML tokens, 200 for JWT tokens), then Microsoft Entra ID doesn't emit the groups claim in the token. Instead, it includes an overage claim in the token that indicates to the application to query the Microsoft Graph API to retrieve the group membership of the user.
Let me know if this answers your query.
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