Webhook failures between enrichment and CRM tools are extremely common. Here are the most frequent causes and fixes:
1. Content-type mismatch. This is the #1 silent killer. Most enrichment platforms expect application/json but some CRMs and tools send application/vnd.api+json or other formats. Content-type mismatches cause parsing failures even when the HTTP response shows 200. Fix: use middleware (Zapier, n8n, Make) to normalize the content-type.
2. JSON formatting errors. Enrichment data often contains special characters, nested objects, or null values that break JSON parsing. Webhooks require properly structured JSON, and auth token mismatches are another common culprit.
3. Data disappearing after successful enrichment. This is a known issue where enrichment runs complete, credits are consumed, but results are lost. Build checkpoint logging - record what was sent and what was received.
4. Rate limiting. Both the enrichment tool and the CRM have rate limits. Sending 5,000 enriched records at once will likely hit HubSpot's API limits. Batch your sends (100-200 records at a time with delays between batches).
5. One-way vs bidirectional sync. Most enrichment-to-CRM integrations are one-way pushes. If you need bidirectional sync, plan for a middleware layer or native integration rather than raw webhooks.
Best practice: Always log your webhook payloads (both sent and received) to a separate sheet or database. When things break - and they will - the logs tell you exactly where.