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The Facebook Offline Events integration forwards in-store transaction data from Omneo to a Meta Conversions API offline event dataset. This lets you attribute offline purchases to your Meta ad campaigns.

How it works

When a transaction.created event fires in Omneo, the offline event extension receives the webhook and forwards the purchase data to Meta’s Conversions API. Meta matches the transaction against its user data and attributes the purchase to the relevant ad campaigns.

Prerequisites

You need:
  • A Meta Business account
  • A Meta Events Manager dataset configured for offline purchases
  • A Conversions API token (generated from your dataset settings)
  • Your Omneo tenant credentials (domain, token, shared secret)

Step 1: Create an offline event dataset in Meta

  1. Open Meta Events Manager
  2. Click Connect Data Sources → Offline → Get started
  3. Name your dataset (e.g., “Omneo Offline Purchases”)
  4. Click Set Up Conversions API and select Purchase as the event type
  5. Follow the setup wizard and click Open Implementation Guide on the final screen
  6. Generate a Conversions API token and copy it
  7. Go to your dataset’s Settings tab and copy the Dataset ID

Step 2: Provide credentials to Omneo

Send the following to your Omneo implementation team to enable the plugin:
  • Conversions API token (from step 6 above)
  • Dataset ID (from step 7 above)
  • Mapping of your Omneo location types to Meta offline event source types (e.g., {"store": "physical_store"})

Step 3: Omneo configuration

Your Omneo implementation team will:
  1. Configure the fb-offline-event plugin settings with your credentials
  2. Create a transaction.created webhook pointing to the offline event extension

Data sent to Meta

For each transaction, the integration sends:
FieldSource
Event typePurchase (fixed)
ValueTransaction total
CurrencyProfile currency
Event timetransacted_at
Email (hashed)Profile email
Phone (hashed)Profile mobile_phone
LocationTransaction location_id mapped to source type
Content needed: event matching rate optimisation, PII handling details, and supported Meta SDK versions.