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Support Article

SAML SSO fails on invoking the IDP twice



Pega Mashup is invoked from an Angular JS based platform from the Pega Gadget Manager. 
When the Create Mashup is invoked, the Single Sign-on (SSO) works correctly. However, on performing actions which invokes a new Mashup gadget, the SSO fails.
The SAML SSO fails on invoking the Identity Provider (IdP) twice.

Error Messages

Error on the Fiddler Trace -  Result 404

Steps to Reproduce

Perform an action to invokes a new mashup gadget. SSO fails.

Root Cause

A defect in Pegasystems’ code or rules.

The length of the URL stored in the database exceeded the length of the pyRelayState and pyRelayStateID columns in the pr_data_saml_logininfo table.


Apply HFix-51364.

Published April 7, 2019 - Updated October 8, 2020

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