<div dir="ltr">Greetings..!!<div><br></div><div><p style="margin:0px 0px 1.1em;padding:0px;border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-variant-alternates:inherit;font-stretch:inherit;line-height:inherit;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI Adjusted","Segoe UI","Liberation Sans",sans-serif;font-size-adjust:inherit;font-kerning:inherit;font-feature-settings:inherit;font-size:15px;vertical-align:baseline;box-sizing:inherit;clear:both;color:rgb(12,13,14)">We are trying to upgrade IDP version from v3.4.4 to v5.1.3 and our application is a standalone application. In our application, we had customized the IDP with our external login authentication. During the upgrade to v5.1.3, we are facing an issue as below, <a href="https://i.sstatic.net/GP30mSDQ.png" rel="nofollow noreferrer" style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;line-height:inherit;font-family:inherit;font-size-adjust:inherit;font-kerning:inherit;font-feature-settings:inherit;vertical-align:baseline;box-sizing:inherit">https://i.sstatic.net/GP30mSDQ.png</a></p><p style="margin:0px 0px 1.1em;padding:0px;border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-variant-alternates:inherit;font-stretch:inherit;line-height:inherit;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI Adjusted","Segoe UI","Liberation Sans",sans-serif;font-size-adjust:inherit;font-kerning:inherit;font-feature-settings:inherit;font-size:15px;vertical-align:baseline;box-sizing:inherit;clear:both;color:rgb(12,13,14)">When we access our application url, it is redirected to SP and it is generating an SAML request and sending it to IDP (<a href="http://localhost:8080/idp/profile/SAML2/POST/SSO">http://localhost:8080/idp/profile/SAML2/POST/SSO</a>). with BAD REQUEST as resulted, logs are attached.</p><div><br></div><div> <span style="color:rgb(12,13,14);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI Adjusted","Segoe UI","Liberation Sans",sans-serif;font-size:15px">Environment: Java v17, Apache Tomcat-v10.1.24, IDP v5.1.3</span></div><p style="margin:0px;padding:0px;border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-variant-alternates:inherit;font-stretch:inherit;line-height:inherit;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI Adjusted","Segoe UI","Liberation Sans",sans-serif;font-size-adjust:inherit;font-kerning:inherit;font-feature-settings:inherit;font-size:15px;vertical-align:baseline;box-sizing:inherit;clear:both;color:rgb(12,13,14)">Kindly help me on this to proceed further. Thank you.</p></div></div>