Fix/optimizely personalization campaign by JamesShebester · Pull Request #1463 · snowplow/snowplow-javascript-tracker

James Shebester (JamesShebester) · 2026-03-26T01:33:44Z

Summary

Replaces getActiveExperimentIds() with getCampaignStates({ isActive: true }) in getOptimizelyXSummary() to correctly capture campaignId for Optimizely Personalization campaigns.

Problem

The existing implementation uses two Optimizely state API calls that
bypass the campaign layer entirely:

// Before — misses campaignId completely
var experiment_ids = state.getActiveExperimentIds() || [];
var variationMap = state.getVariationMap();

For Optimizely Personalization campaigns, getActiveExperimentIds()
surfaces experience IDs (the sub-unit inside a campaign) but never
exposes the parent campaignId (layerId). This means campaignId
was never captured in Snowplow event data — not as null, not as empty — it simply did not exist in the schema output.

Solution

getCampaignStates({ isActive: true }) returns a unified state object
for both Web Experimentation and Personalization campaigns, where the
top-level key is the campaignId:

// After — correctly captures campaignId for all campaign types
const campaignStates = state.getCampaignStates({ isActive: true }) || {};

return Object.keys(campaignStates).map((campaignId: string) => {
  const campaign = campaignStates[campaignId];
  return {
    campaignId: parseAndValidateInt(campaignId) || null,
    experimentId: parseAndValidateInt(campaign.experiment?.id) || null,
    variationName: campaign.variation?.name?.toString() || null,
    variation: parseAndValidateInt(campaign.variation?.id) || null,
    visitorId: visitorId,
  };
});

Behavior by Campaign Type

Field	Web Experimentation	Personalization
`campaignId`	layerId (auto-generated wrapper)	layerId of the campaign
`experimentId`	experimentId	experienceId (sub-unit of campaign)
`variation`	variationId	variationId

Changes

src/index.ts — replaced getActiveExperimentIds() + getVariationMap()
with getCampaignStates({ isActive: true }), moved visitorId resolution
outside the loop, updated schema reference to 1-1-0
src/contexts.ts — added campaignId?: number | null to
OptimizelyxSummary interface

Schema

This change requires a new schema version
iglu:com.optimizely.optimizelyx/summary/jsonschema/1-1-0 with campaignId
added as an optional integer field. This is a minor version bump
(1-0-0 → 1-1-0) as the addition is backward compatible — existing events without campaignId remain valid.

Testing

Verified in browser console against a live Optimizely Personalization
campaign:

optimizely.get('state').getCampaignStates({ isActive: true })
// Returns campaignId, experiment.id, variation.id, and variation.name 
// correctly for both Personalization and Web Experimentation campaigns

…campaign getActiveExperimentIds() does not surface campaignId (layerId) for Optimizely Personalization campaigns. Switching to getCampaignStates() correctly captures the campaign layer for both Web Experimentation and Personalization campaigns. Also adds campaignId to OptimizelyxSummary interface and bumps schema reference to 1-1-0.

Snowplow CLA bot (snowplowcla) · 2026-03-26T01:33:52Z

Thanks for your pull request. Is this your first contribution to a Snowplow open source project? Before we can look at your pull request, you'll need to sign a Contributor License Agreement (CLA).

📝 Please visit https://docs.snowplowanalytics.com/docs/contributing/contributor-license-agreement/ to learn more and sign.

Once you've signed, please reply here (e.g. I signed it!) and we'll verify. Thanks.

James Shebester (JamesShebester) · 2026-03-26T01:43:34Z

I Signed It! James Shebester

…

________________________________ From: Snowplow CLA bot ***@***.***> Sent: Wednesday, March 25, 2026 8:34 PM To: snowplow/snowplow-javascript-tracker ***@***.***> Cc: James Shebester ***@***.***>; Author ***@***.***> Subject: Re: [snowplow/snowplow-javascript-tracker] Fix/optimizely personalization campaign (PR #1463) snowplowcla left a comment (snowplow/snowplow-javascript-tracker#1463) Thanks for your pull request. Is this your first contribution to a Snowplow open source project? Before we can look at your pull request, you'll need to sign a Contributor License Agreement (CLA). 📝 Please vi ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ 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Snowplow CLA bot (snowplowcla) · 2026-03-26T01:43:42Z

Confirmed! James Shebester (@JamesShebester) has signed the Contributor License Agreement. Thanks so much.

John Reid (johnmicahreid) · 2026-04-16T08:39:11Z

Thanks for this contribution James Shebester (@JamesShebester)!

We'll take a look and get the Iglu Central PR raised on our side for the schema version bump.

Copilot

Pull request overview

Updates the Optimizely X browser plugin to correctly include campaignId (layerId) in the emitted Optimizely summary context, especially for Optimizely Personalization campaigns where getActiveExperimentIds() does not expose the campaign layer.

Changes:

Switch summary extraction to state.getCampaignStates({ isActive: true }) and include campaignId in the mapped context data.
Extend the OptimizelyxSummary TypeScript interface to include campaignId.
Bump the emitted Iglu schema reference from 1-0-0 to 1-1-0.

Reviewed changes

Copilot reviewed 2 out of 3 changed files in this pull request and generated 4 comments.

File	Description
plugins/browser-plugin-optimizely-x/src/index.ts	Uses `getCampaignStates` to map active campaigns and emits schema `1-1-0`.
plugins/browser-plugin-optimizely-x/src/contexts.ts	Adds `campaignId` to the summary context interface.
plugins/browser-plugin-optimizely-x/pnpm-lock.yaml	Introduces a per-package lockfile (conflicts with Rush-managed lockfile conventions).

Files not reviewed (1)

plugins/browser-plugin-optimizely-x/pnpm-lock.yaml: Language not supported

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

Copilot · 2026-04-20T07:43:49Z

+    dependencies:
+      '@snowplow/browser-tracker-core':
+        specifier: ~4.6.9
+        version: 4.6.9
+      '@snowplow/tracker-core':
+        specifier: ~4.6.9
+        version: 4.6.9


The dependency entries in this lockfile pin @snowplow/* to ~4.6.9, which conflicts with this package's package.json (workspace:* deps and peer @snowplow/browser-tracker ~4.7.0). If this lockfile is kept, it should be regenerated from the monorepo install so versions/specifiers match the workspace configuration; otherwise remove it.

Copilot · 2026-04-20T07:43:49Z

 * Schema for an Optimizely X summary context
 */
 export interface OptimizelyxSummary {
+  campaignId?: number | null;    // added: captures the Personalization campaign layerId


This inline comment implies campaignId is only for Personalization, but index.ts now populates campaignId for all campaign types (Web Experimentation + Personalization). Update the comment to avoid misleading future readers.

Suggested change

campaignId?: number | null; // added: captures the Personalization campaign layerId

campaignId?: number | null; // captures the campaign/layer identifier for Web Experimentation and Personalization

Copilot · 2026-04-20T07:43:49Z

    return getOptimizelyXSummary().map(function (experiment) {
      return {
-        schema: 'iglu:com.optimizely.optimizelyx/summary/jsonschema/1-0-0',
+        schema: 'iglu:com.optimizely.optimizelyx/summary/jsonschema/1-1-0',
        data: experiment,


The callback parameter name experiment is now a bit misleading since each element can represent a campaign summary (it includes campaignId). Renaming it to something like summary/contextData would improve readability and avoid confusion.

Copilot · 2026-04-20T07:43:50Z

+lockfileVersion: '9.0'
+
+settings:
+  autoInstallPeers: true
+  excludeLinksFromLockfile: false
+
+importers:
+
+  .:
+    dependencies:
+      '@snowplow/browser-tracker-core':
+        specifier: ~4.6.9
+        version: 4.6.9
+      '@snowplow/tracker-core':
+        specifier: ~4.6.9
+        version: 4.6.9
+
+packages:
+
+  '@snowplow/browser-tracker-core@4.6.9':
+    resolution: {integrity: sha512-KyW/zU7Isb49/2XcliwTb7yOZvowHXBfdlODiEOGXWn9QcWyAEawqETh/gZJua/+lg+9d6zp2F9bqkKPpwtpKg==}
+
+  '@snowplow/tracker-core@4.6.9':
+    resolution: {integrity: sha512-ybKK3t7pd+JwX9BA+DeiuyzbOgE0RpbzhTpPwHvIom+gAQUYCZpyECxFT5FBLrdZtGeWdIaoY93JXneDNfVGLg==}
+
+  charenc@0.0.2:
+    resolution: {integrity: sha512-yrLQ/yVUFXkzg7EDQsPieE/53+0RlaWTs+wBrvW36cyilJ2SaDWfl4Yj7MtLTXleV9uEKefbAGUPv2/iWSooRA==}
+
+  crypt@0.0.2:
+    resolution: {integrity: sha512-mCxBlsHFYh9C+HVpiEacem8FEBnMXgU9gy4zmNC+SXAZNB/1idgp/aulFJ4FgCi7GPEVbfyng092GqL2k2rmow==}
+
+  sha1@1.1.1:
+    resolution: {integrity: sha512-dZBS6OrMjtgVkopB1Gmo4RQCDKiZsqcpAQpkV/aaj+FCrCg8r4I4qMkDPQjBgLIxlmu9k4nUbWq6ohXahOneYA==}
+
+  tslib@2.8.1:
+    resolution: {integrity: sha512-oJFu94HQb+KVduSUQL7wnpmqnfmLsOA/nAh6b6EH0wCEoK0/mPeXU6c3wKDV83MkOuHPRHtSXKKU99IBazS/2w==}
+
+  uuid@10.0.0:
+    resolution: {integrity: sha512-8XkAphELsDnEGrDxUOHB3RGvXz6TeuYSGEZBOjtTtPm2lwhGBjLgOzLHB63IUWfBpNucQjND6d3AOudO+H3RWQ==}
+    hasBin: true
+
+snapshots:
+
+  '@snowplow/browser-tracker-core@4.6.9':
+    dependencies:
+      '@snowplow/tracker-core': 4.6.9
+      sha1: 1.1.1
+      tslib: 2.8.1
+      uuid: 10.0.0
+
+  '@snowplow/tracker-core@4.6.9':
+    dependencies:
+      tslib: 2.8.1
+      uuid: 10.0.0
+
+  charenc@0.0.2: {}
+
+  crypt@0.0.2: {}
+
+  sha1@1.1.1:
+    dependencies:
+      charenc: 0.0.2
+      crypt: 0.0.2
+
+  tslib@2.8.1: {}
+
+  uuid@10.0.0: {}


This repo uses Rush with a single pnpm lockfile under common/config/rush/pnpm-lock.yaml (see .github workflows hashing that file). Committing an additional per-package pnpm-lock.yaml here is likely unused by CI and can cause confusing, divergent dependency installs if someone runs pnpm in this folder. Consider removing this file and relying on the Rush-managed lockfile instead.

Suggested change

lockfileVersion: '9.0'

settings:

autoInstallPeers: true

excludeLinksFromLockfile: false

importers:

.:

dependencies:

'@snowplow/browser-tracker-core':

specifier: ~4.6.9

version: 4.6.9

'@snowplow/tracker-core':

specifier: ~4.6.9

version: 4.6.9

packages:

'@snowplow/browser-tracker-core@4.6.9':

resolution: {integrity: sha512-KyW/zU7Isb49/2XcliwTb7yOZvowHXBfdlODiEOGXWn9QcWyAEawqETh/gZJua/+lg+9d6zp2F9bqkKPpwtpKg==}

'@snowplow/tracker-core@4.6.9':

resolution: {integrity: sha512-ybKK3t7pd+JwX9BA+DeiuyzbOgE0RpbzhTpPwHvIom+gAQUYCZpyECxFT5FBLrdZtGeWdIaoY93JXneDNfVGLg==}

charenc@0.0.2:

resolution: {integrity: sha512-yrLQ/yVUFXkzg7EDQsPieE/53+0RlaWTs+wBrvW36cyilJ2SaDWfl4Yj7MtLTXleV9uEKefbAGUPv2/iWSooRA==}

crypt@0.0.2:

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hasBin: true

snapshots:

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dependencies:

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sha1: 1.1.1

tslib: 2.8.1

uuid: 10.0.0

'@snowplow/tracker-core@4.6.9':

dependencies:

tslib: 2.8.1

uuid: 10.0.0

charenc@0.0.2: {}

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dependencies:

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crypt: 0.0.2

tslib@2.8.1: {}

uuid@10.0.0: {}

Matus Tomlein (matus-tomlein)

Thank you for the contribution James Shebester (@JamesShebester)! We will work on getting the schema published and finalizing this into a tracker release on our side.

James Shebester (JamesShebester) added 2 commits March 25, 2026 19:39

chore: update pnpm lockfile

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Snowplow CLA bot (snowplowcla) added the cla:no [Auto generated] Snowplow Contributor License Agreement has not been signed. label Mar 26, 2026

Snowplow CLA bot (snowplowcla) added cla:yes [Auto generated] Snowplow Contributor License Agreement has been signed. and removed cla:no [Auto generated] Snowplow Contributor License Agreement has not been signed. labels Mar 26, 2026

Merge branch 'master' into fix/optimizely-personalization-campaign-id

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John Reid (johnmicahreid) requested review from Peter Perlepes (igneel64) and Matus Tomlein (matus-tomlein) April 16, 2026 08:38

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Copilot started reviewing on behalf of Matus Tomlein (matus-tomlein) April 20, 2026 07:39 View session

Matus Tomlein (matus-tomlein) changed the base branch from master to release/4.8.0 April 20, 2026 07:40

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Matus Tomlein (matus-tomlein) changed the base branch from release/4.8.0 to fix/optimizely-personalization-campaign-id April 20, 2026 07:52

Matus Tomlein (matus-tomlein) approved these changes Apr 20, 2026

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Matus Tomlein (matus-tomlein) merged commit 653f446 into snowplow:fix/optimizely-personalization-campaign-id Apr 20, 2026
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This was referenced Apr 20, 2026

fix(optimizely-x): capture campaignId for Personalization campaigns #1468

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Add com.optimizely.optimizelyx/summary/jsonschema/1-1-0 snowplow/iglu-central#1483

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Fix/optimizely personalization campaign#1463

Fix/optimizely personalization campaign#1463
Matus Tomlein (matus-tomlein) merged 3 commits intosnowplow:fix/optimizely-personalization-campaign-idfrom
JamesShebester:fix/optimizely-personalization-campaign-id

James Shebester (JamesShebester) commented Mar 26, 2026

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	campaignId?: number \| null; // added: captures the Personalization campaign layerId
	campaignId?: number \| null; // captures the campaign/layer identifier for Web Experimentation and Personalization

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James Shebester (JamesShebester) commented Mar 26, 2026

Summary

Problem

Solution

Behavior by Campaign Type

Changes

Schema

Testing

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