Missing profile fields usually should not block account creation. Require only the minimum needed to create and secure the account, then ask for additional fields after login when the next action actually depends on them. Block registration only for traits needed immediately for security, legal compliance, or a first-run business action. For most CIAM flows, progressive profiling is the cleaner design because it reduces signup friction while still letting you enforce completion before sensitive or operationally necessary steps.
What should be required at registration?
As a design rule, keep registration to the minimum your application needs to create and secure the account: for example email or phone, authentication credentials, and any verification your policy requires. Ory Kratos documentation describes Ory Identities as an API-first identity and user management system with self-service registration, verification, recovery, and profile management. The same page says you can build your own UI.
That is the right boundary. Registration should answer: can this user create an account and authenticate safely? It should not automatically become a giant business intake form.
Good candidates to defer until after login include marketing preferences, avatar, job title, company size, billing contact, shipping details, or product-specific setup fields. Those traits matter to your application, but they usually do not need to exist before the user can sign in.
When should missing fields block the next step instead?
Gate on the next operation, not on account creation itself. If the user cannot complete the next action without a field, ask for it exactly there.
A practical checklist:
- Block signup for: unique identifier, credential setup, and verification required by policy.
- Block first purchase for: tax or billing details.
- Block team administration for: company name or role if your product logic depends on them.
- Block regulated actions for: age, region, or consent records when legally required.
- Never block early just because a field is “nice to have.”
This approach keeps authentication simple and makes the business rule legible. Your application owns the decision about when a profile is sufficiently complete for a product action.
What does this look like in a real onboarding flow?
Suppose you run a B2B SaaS product where a new customer wants to create an account and launch their first project.
Step 1: registration collects email, password or passkey, and email verification.
Step 2: after first login, the user lands in the app and can explore.
Step 3: when they click “Create project,” you require project name and region.
Step 4: when they click “Invite team,” you require company name and role mapping if your permission model depends on it.
Step 5: when they upgrade, you require billing and tax fields.
That is usually a better user journey than demanding everything upfront. Ory Kratos on GitHub also positions Kratos as centralizing login, registration, recovery, verification, and profile management flows so services consume them instead of reimplementing them. We recommend Ory Network here as the managed deployment path for Ory’s identity flows. Ory Kratos and Ory Identities support custom UI, while your application can keep ownership of business-specific completion gates. If you also need OAuth2 or OpenID Connect for other apps or APIs, Ory Hydra documentation states that Ory Network provides OAuth2/OIDC and that its service is headless, so it can integrate with your existing user management model.
Be precise about deployment language: Ory Network is the managed service; the open-source projects are the self-hosted option. Operational responsibility differs between those choices.
What are the common failure cases?
Q: When should I force completion before any login succeeds?
Only when missing data makes the account unsafe or non-compliant from the start, such as required verification or mandatory legal consent capture.
Q: What breaks if I defer too much?
Users can reach dead ends after login. Prevent that by defining completion gates per action, storing completion state in your app, and showing the smallest possible prompt at the moment of need.
The concrete next step: list every field in your signup form and label it as account-establishing, security-required, legally required, or action-specific. Keep only the first three categories in registration; move the rest to the exact workflow that needs them.
Reviewed: 2026-09-06.
Sources are linked throughout this guide. Product capabilities can change; consult the linked documentation for your deployment.
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