i am adding user from frontend using bring your own screen using flow i need to create this sandeep.saini@signitysolutions.in_3 email address a valid email address currently getting this error while signing user up

Request is invalid The user.email field must have a valid domain name - The user.email field must have a valid domain name Error
    at Object.error (BaseDescopeWc.js:1:1545)
    at Ue.<anonymous> (DescopeWc.js:1:5073)
    at Ue.<anonymous> (DescopeWc.js:1:19669)
    at Generator.next (<anonymous>)
    at fulfilled (tslib.es6.mjs:118:41)
    at _ZoneDelegate.invoke (zone.js:398:28)
    at ZoneImpl.run (zone.js:113:43)
    at zone.js:2537:40
    at _ZoneDelegate.invokeTask (zone.js:431:33)
    at ZoneImpl.runTask (zone.js:161:47)

Email Domain Validation Issue The error occurs because

sandeep.saini@signitysolutions.in_3

contains an underscore in the domain part, which violates standard email format rules. Fix the Email Format 1. Remove the underscore from the domain portion:

sandeep.saini@signitysolutions.in3

Or use a different approach like:

<mailto:sandeep.saini+3@signitysolutions.in|sandeep.saini+3@signitysolutions.in>

Alternative Solutions • Use the plus sign (+) for email variations instead of underscores • Create separate email addresses without special characters in the domain • If testing, use a valid test domain format The error "must have a valid domain name" is triggered by Descope's email validation which follows RFC standards that don't allow underscores in domain names . Descope Common Errors | Descope Documentation

but this is the way i want to create user explicitly in this way as sandeep.saini@signitysolutions.in_3 how can i make this a valid emaill address

Bypass Email Validation You cannot make

sandeep.saini@signitysolutions.in_3

a valid email address because underscores in domain names violate RFC standards that Descope enforces. Workaround Options 1. Use the Management API instead of flows - it may have less strict validation:

// Management API user creation
const user = await descopeClient.management.user.create({
  email: "sandeep.saini@signitysolutions.in_3",
  // other user properties
});

2. Create the user with a valid email, then update the loginId:

// Create with valid email first
const user = await descopeClient.management.user.create({
  email: "<mailto:sandeep.saini@signitysolutions.in|sandeep.saini@signitysolutions.in>",
  loginIds: ["sandeep.saini@signitysolutions.in_3"]
});

Alternative Formats If you need the "3" identifier, use these valid formats instead: •

<mailto:sandeep.saini+3@signitysolutions.in|sandeep.saini+3@signitysolutions.in>

(plus addressing) •

<mailto:sandeep.saini.3@signitysolutions.in|sandeep.saini.3@signitysolutions.in>

(dot in local part) •

<mailto:sandeep.saini@signitysolutions3.in|sandeep.saini@signitysolutions3.in>

(number in domain) The underscore in the domain portion will always fail validation as it's not RFC-compliant . Descope Common Errors | Descope Documentation