2872658 - 400 Bad Request error in SAP Analytics Cloud due to SAML Assertion limit

The following error occurs in SAP Analytics Cloud (SAC) when logging into a custom IDP:

• 400 Bad Request

• SAP Analytics Cloud, Enterprise Edition

• The SAML assertion is too large.
• The limit on size of SAML assertion is 25KB (See Application Identity Provider for SAP BTP, Neo Environment).
• This is applied to SAC hosted on both SAP Data Center (eg. EU1 / NEO) and non-SAP Data Centers (i.e. EU10 / Cloud Foundry (CF)).

• For more information, see 2732890 - SAML assertion size limit on SAP BTP.
• This hard limit is coded into the platform and cannot be removed. We recommend that you avoid sending unnecessary user attributes and groups from the Identity Provider (IdP). If a larger assertion is received, the platform returns a '400 Bad Request' response.
• Additionally, if you are using Microsoft Azure Active Directory (AD) as a Custom SAML IdP, please make sure to limit the amount of SAML group values to less than 150, as Azure AD will truncate (remove) any Groups above this number which can result in unexpected behaviour in SAP Analytics Cloud, particularly if you are using a SAML Role Based Mapping. For more information, see https://docs.microsoft.com/en-us/azure/active-directory/hybrid/how-to-connect-fed-group-claims

• SAP Analytics Cloud data connectivity community topic page
• 2569847 - Where can you find SAC user assistance (help) to use, configure, and operate it more effectively?
• Have a question? Ask it here and let our amazing SAP community help! Or reply and share your knowledge!
• 2487011 - What information do I need to provide when opening an case for SAP Analytics Cloud?
• Search for SAP Analytics Cloud content using Google or Bing:
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• SAP Analytics Cloud > Learning > Data Connections
• SAP Analytics Cloud > Learning > Guided Playlists
• SAP Analytics Cloud > Learning > Guided Playlists > Getting Support
• Need More Help? Contact Support or visit the solution finder today!

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