Block fields causes error when copying data from one locale to another

[ivankyrpa]

Describe the Bug

When trying to copy a collection item with some block field from one locale to another an error is thrown in the console:

ERROR: There was an error copying data from "en" to "de"
    err: {
      "type": "ValidationError",
      "message": "error:followingFieldsInvalid id",
      "stack":
          ValidationError: error:followingFieldsInvalid id
              at upsertRow (webpack-internal:///(rsc)/./node_modules/.pnpm/@[email protected]_@[email protected]_@[email protected][email protected][email protected]__k5ywpqrp57ji25edtdhcui6mje/node_modules/@payloadcms/drizzle/dist/upsertRow/index.js:347:19)
              at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
              at async Object.updateOne (webpack-internal:///(rsc)/./node_modules/.pnpm/@[email protected]_@[email protected]_@[email protected][email protected][email protected]__k5ywpqrp57ji25edtdhcui6mje/node_modules/@payloadcms/drizzle/dist/update.js:64:20)
              at async updateByIDOperation (webpack-internal:///(rsc)/./node_modules/.pnpm/[email protected][email protected][email protected][email protected][email protected][email protected][email protected]/node_modules/payload/dist/collections/operations/updateByID.js:279:22)
              at async copyDataFromLocale (webpack-internal:///(rsc)/./node_modules/.pnpm/@[email protected]_@[email protected][email protected][email protected][email protected]_re_iitep6qeqia34bg4guvfwem574/node_modules/@payloadcms/ui/dist/utilities/copyDataFromLocale.js:199:8)
              at async copyDataFromLocaleHandler (webpack-internal:///(rsc)/./node_modules/.pnpm/@[email protected]_@[email protected][email protected][email protected][email protected]_re_iitep6qeqia34bg4guvfwem574/node_modules/@payloadcms/ui/dist/utilities/copyDataFromLocale.js:109:12)
              at async /Users/ivankyrpa/Projects/payload-cms-3-9-0/node_modules/.pnpm/[email protected][email protected][email protected][email protected][email protected]/node_modules/next/dist/compiled/next-server/app-page.runtime.dev.js:157:2088
              at async handleAction (/Users/ivankyrpa/Projects/payload-cms-3-9-0/node_modules/.pnpm/[email protected][email protected][email protected][email protected][email protected]/node_modules/next/dist/compiled/next-server/app-page.runtime.dev.js:156:21940)
              at async renderToHTMLOrFlightImpl (/Users/ivankyrpa/Projects/payload-cms-3-9-0/node_modules/.pnpm/[email protected][email protected][email protected][email protected][email protected]/node_modules/next/dist/compiled/next-server/app-page.runtime.dev.js:161:22192)
              at async doRender (/Users/ivankyrpa/Projects/payload-cms-3-9-0/node_modules/.pnpm/[email protected][email protected][email protected][email protected][email protected]/node_modules/next/dist/server/base-server.js:1565:34)
              at async responseGenerator (/Users/ivankyrpa/Projects/payload-cms-3-9-0/node_modules/.pnpm/[email protected][email protected][email protected][email protected][email protected]/node_modules/next/dist/server/base-server.js:1813:28)
              at async DevServer.renderToResponseWithComponentsImpl (/Users/ivankyrpa/Projects/payload-cms-3-9-0/node_modules/.pnpm/[email protected][email protected][email protected][email protected][email protected]/node_modules/next/dist/server/base-server.js:1823:28)
              at async DevServer.renderPageComponent (/Users/ivankyrpa/Projects/payload-cms-3-9-0/node_modules/.pnpm/[email protected][email protected][email protected][email protected][email protected]/node_modules/next/dist/server/base-server.js:2250:24)
              at async DevServer.renderToResponseImpl (/Users/ivankyrpa/Projects/payload-cms-3-9-0/node_modules/.pnpm/[email protected][email protected][email protected][email protected][email protected]/node_modules/next/dist/server/base-server.js:2288:32)
              at async DevServer.pipeImpl (/Users/ivankyrpa/Projects/payload-cms-3-9-0/node_modules/.pnpm/[email protected][email protected][email protected][email protected][email protected]/node_modules/next/dist/server/base-server.js:959:25)
              at async NextNodeServer.handleCatchallRenderRequest (/Users/ivankyrpa/Projects/payload-cms-3-9-0/node_modules/.pnpm/[email protected][email protected][email protected][email protected][email protected]/node_modules/next/dist/server/next-server.js:281:17)
              at async DevServer.handleRequestImpl (/Users/ivankyrpa/Projects/payload-cms-3-9-0/node_modules/.pnpm/[email protected][email protected][email protected][email protected][email protected]/node_modules/next/dist/server/base-server.js:853:17)
              at async /Users/ivankyrpa/Projects/payload-cms-3-9-0/node_modules/.pnpm/[email protected][email protected][email protected][email protected][email protected]/node_modules/next/dist/server/dev/next-dev-server.js:371:20
              at async Span.traceAsyncFn (/Users/ivankyrpa/Projects/payload-cms-3-9-0/node_modules/.pnpm/[email protected][email protected][email protected][email protected][email protected]/node_modules/next/dist/trace/trace.js:153:20)
              at async DevServer.handleRequest (/Users/ivankyrpa/Projects/payload-cms-3-9-0/node_modules/.pnpm/[email protected][email protected][email protected][email protected][email protected]/node_modules/next/dist/server/dev/next-dev-server.js:368:24)
              at async invokeRender (/Users/ivankyrpa/Projects/payload-cms-3-9-0/node_modules/.pnpm/[email protected][email protected][email protected][email protected][email protected]/node_modules/next/dist/server/lib/router-server.js:230:21)
              at async handleRequest (/Users/ivankyrpa/Projects/payload-cms-3-9-0/node_modules/.pnpm/[email protected][email protected][email protected][email protected][email protected]/node_modules/next/dist/server/lib/router-server.js:408:24)
              at async requestHandlerImpl (/Users/ivankyrpa/Projects/payload-cms-3-9-0/node_modules/.pnpm/[email protected][email protected][email protected][email protected][email protected]/node_modules/next/dist/server/lib/router-server.js:432:13)
              at async Server.requestListener (/Users/ivankyrpa/Projects/payload-cms-3-9-0/node_modules/.pnpm/[email protected][email protected][email protected][email protected][email protected]/node_modules/next/dist/server/lib/start-server.js:146:13)
      "data": {
        "id": 3,
        "errors": [
          {
            "message": "error:valueMustBeUnique",
            "path": "id"
          }
        ]
      },
      "isOperational": true,
      "isPublic": false,
      "status": 400,
      "name": "ValidationError"
    }

Link to the code that reproduces this issue

https://github.com/ivankyrpa/payload-cms-3.0.9

Reproduction Steps

I used npx create-payload-appcommand to create repro repo. Please use link to reproduction for the full example.

How to reproduce

1. Create a BlockTest item with block field in "en" locale
2. Click "Copy to locale" link and choose "de" locale as a target
3. Click "Copy" button and observe the error in the console

BlockTests collection:

export const BlockTests: CollectionConfig = {
  slug: 'blockTests',
  fields: [
    {
      name: 'text',
      type: 'text',
      localized: true,
    },
    {
      name: 'content',
      type: 'blocks',
      localized: true,
      blocks: [
        {
          slug: 'text',
          fields: [
            {
              name: 'text',
              type: 'text',
            },
          ],
        },
      ],
    },
  ],
}

Payload config:

export default buildConfig({
  collections: [BlockTests, ...],
  localization: {
    defaultLocale: 'en',
    locales: ['en', 'de'],
    fallback: true,
  },
  ...
})

Which area(s) are affected? (Select all that apply)

area: core

Environment Info

Binaries:
  Node: 20.12.2
  npm: 10.5.0
  Yarn: 1.22.22
  pnpm: 9.10.0
Relevant Packages:
  payload: 3.9.0
  next: 15.1.0
  @payloadcms/db-postgres: 3.9.0
  @payloadcms/email-nodemailer: 3.9.0
  @payloadcms/graphql: 3.9.0
  @payloadcms/next/utilities: 3.9.0
  @payloadcms/payload-cloud: 3.9.0
  @payloadcms/richtext-lexical: 3.9.0
  @payloadcms/translations: 3.9.0
  @payloadcms/ui/shared: 3.9.0
  react: 19.0.0
  react-dom: 19.0.0