## Context Reported via support ([private-issues#477](https://github.com/twentyhq/private-issues/issues/477)): a customer saw **"Invalid Configuration"** in red on a record's **Timeline** tab. The dev console was flooded with: ``` RangeError: Cannot parse: 2026-05-07 at Temporal.Instant.from (...) at RecordFieldComponent ... ``` ## Root cause A `DATE_TIME` field in their workspace holds **date-only** values like `2026-05-07`. `validateDateTimeFieldOrThrow` (the write-path validator) **accepts** date-only formats — `'yyyy-MM-dd'` is in `ACCEPTED_DATE_TIME_FORMATS` — and **returns the raw input string unchanged**, with no normalization. So a date-only string passes validation and propagates verbatim into the mutation response and the timeline event payload. On render, `DateTimeDisplay` builds the timezone hint with `Temporal.Instant.from(value)`. That's strict — it requires a full instant (time + offset/`Z`) and throws `RangeError` on a bare date. The throw escapes into the page-layout widget error boundary, which renders the **"Invalid Configuration"** fallback and breaks the whole timeline. ## Fix **Backend (root cause) — normalize on write.** `validateDateTimeFieldOrThrow` now canonicalizes every accepted value to a full ISO 8601 instant, so a date-only value can never reach storage, the mutation response, or timeline events for a `DATE_TIME` field: - strict ISO-8601 carrying an offset/`Z` -> kept as its exact instant (server-timezone-independent) - zoneless / date-only / lenient formats -> interpreted as **UTC** (date-only -> midnight UTC), deterministically Lenient input is preserved — parsing still uses date-fns for the ~20 accepted formats (which `Temporal.Instant.from` cannot parse); only the *output* is canonicalized, via Temporal. | input | before (stored raw) | after (normalized) | |---|---|---| | `2026-05-07` | `2026-05-07` | `2026-05-07T00:00:00Z` | | `2026-05-07T12:00:00+02:00` | `2026-05-07T12:00:00+02:00` | `2026-05-07T10:00:00Z` | | `2026-05-07T12:00:00.000Z` | `2026-05-07T12:00:00.000Z` | `2026-05-07T12:00:00Z` | | `January 15, 2024` | `January 15, 2024` | `2024-01-15T00:00:00Z` | **Frontend (existing data) — Temporal-native guard.** Existing workspaces already have date-only values stored in events, so the backend fix alone won't un-break the reporting customer's timeline. `DateTimeDisplay` now parses the value via a new `parseStringToInstantOrNull` helper (Temporal `Instant.from` with a `PlainDate` start-of-day-UTC fallback) and only renders the timezone hint when valid — so stored bad data renders gracefully instead of crashing. This replaces the initial `new Date()` guard with a Temporal-native one, in line with the codebase's Temporal migration. ## Tests - `validate-date-time-field-or-throw.util.spec.ts` updated to assert the normalized instant output, incl. explicit date-only -> midnight-UTC cases. - `parseStringToInstantOrNull.test.ts` — unit coverage for the frontend helper (instant, offset, date-only, unparseable). - `DateTimeDisplay.stories.tsx` — story rendering a date-only value under a non-system timezone (the previously-crashing path).
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Why Twenty
Twenty gives technical teams the building blocks for a custom CRM that meets complex business needs and quickly adapts as the business evolves. Twenty is the CRM you build, ship, and version like the rest of your stack.
Learn more about why we built Twenty
Installation
Cloud
The fastest way to get started. Sign up at twenty.com and spin up a workspace in under a minute, with no infrastructure to manage and always up to date.
Build an app
Scaffold a new app with the Twenty CLI:
npx create-twenty-app my-app
Define objects, fields, and views as code:
import { defineObject, FieldType } from 'twenty-sdk/define';
export default defineObject({
nameSingular: 'deal',
namePlural: 'deals',
labelSingular: 'Deal',
labelPlural: 'Deals',
fields: [
{ name: 'name', label: 'Name', type: FieldType.TEXT },
{ name: 'amount', label: 'Amount', type: FieldType.CURRENCY },
{ name: 'closeDate', label: 'Close Date', type: FieldType.DATE_TIME },
],
});
Then ship it to your workspace:
npx twenty app:publish --private
See the app development guide for objects, views, agents, and logic functions.
Self-hosting
Run Twenty on your own infrastructure with Docker Compose, or contribute locally via the local setup guide.
Everything you need
Twenty gives you the building blocks of a modern CRM (objects, views, workflows, and agents) and lets you extend them as code. Here's a tour of what's in the box.
Want to go deeper? Read the User Guide for product walkthroughs, or the
Documentation for developer reference.
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Stack
TypeScript
Nx
NestJS, with BullMQ,
PostgreSQL,
Redis
React, with Jotai, Linaria and Lingui
Thanks
Thanks to these amazing services that we use and recommend for code review (Greptile), catching bugs (Sentry) and translating (Crowdin).
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