Plex and Marketo integration

What moves between them

Plex suppliers and purchase orders flow into Marketo as custom objects and lead records. Supplier records from Plex are synced into Marketo companies and custom fields, while purchase orders become linked activity records or opportunity references tied to the relevant company. Marketo companies and leads may be enriched with Plex GL account codes and payment terms for reporting. The flow runs on a polling schedule aligned to your procurement cycles - typically every 5 to 15 minutes from Plex and every polling interval from Marketo. Historical bulk loads are supported via Plex SFTP DataSources extracts.

How ml-connector handles it

ml-connector authenticates to Plex using OAuth 2.0 client credentials and accepts the full Plex Cloud REST endpoint, and authenticates to Marketo using the Munchkin ID, Client ID, and Client Secret to obtain a Bearer token with a 3600-second expiry. Because both systems are poll-only and neither offers native webhooks, ml-connector polls the Plex API filtering by modified_date and the Marketo activity stream using paging tokens to detect changes incrementally. Suppliers are mapped to Marketo companies by external ID, and purchase orders are attached as custom objects or linked to the company. Plex role-based permissions and PCN routing are enforced on the Plex side, so the integration user must have the correct role assigned and the company code must route to the correct data partition. Rate limits and exponential backoff are handled on both sides, certificate validation and token refresh are automatic, and every record carries a full audit trail and can be replayed if a downstream API call fails.

A real-world example

A mid-sized discrete manufacturer in automotive supplies runs Plex for procurement and production, and uses Marketo for demand generation and partner outreach. Before the integration, the marketing team had no visibility into supplier quality, order volume, or payment stability - they pitched products to companies without knowing if they were reliable vendors or at risk. With Plex and Marketo connected, each new supplier record and purchase order from Plex enriches the company profile in Marketo, showing marketing which vendors are active, how much volume they handle, and what payment terms Plex has negotiated. Sales can now target growth opportunities with suppliers they already trust, and marketing can personalize outreach based on real operational data.

What you can do

• •Sync Plex suppliers into Marketo companies and enrich them with GL account codes, payment terms, and invoice history for better lead targeting.
• •Map Plex purchase orders to Marketo custom objects or activities so sales sees real-time supplier demand patterns.
• •Authenticate Plex with OAuth 2.0 client credentials and Marketo with Munchkin ID and Client Secret.
• •Poll both Plex and Marketo APIs incrementally on a configurable schedule, with automatic exponential backoff on rate limits.
• •Maintain a full audit trail on every supplier and order record, with replay capability if a downstream sync fails.

Questions

Which direction does data move between Plex and Marketo?

Plex suppliers and purchase orders flow into Marketo as companies, custom objects, and activities. Marketo is the destination for enrichment; Plex data is read-only in this direction, so ml-connector does not write procurement data back into Plex from Marketo.

Why must both systems be polled if neither offers webhooks?

Plex has no native webhooks and supports polling only via modified-date and created-date filters. Marketo webhooks are outbound only - they push events from Marketo to external systems, not the reverse. ml-connector polls both APIs on your configured schedule to detect new and changed records incrementally.

How does ml-connector handle Plex role-based permissions and company codes (PCN)?

Plex enforces role-based access control, so the integration user must have the correct Plex role assigned to see supplier, order, and invoice data. ml-connector accepts the PCN (company code) in the Plex authentication configuration to route to the correct data partition. If permissions are misconfigured, Plex returns 403 or empty results; the audit trail will show this.