Background
API rate limiting is one of the most common challenges developers face when integrating systems—especially in high-volume enterprise landscapes like SAP Integration Suite, Calling V2 APIs for Extensibility, Side by Side BTP extensions built or consuming in external SaaS platforms.
If not monitored properly, your application can start failing with HTTP 429 – Too Many Requests, impacting business-critical processes.
Previous Article : https://community.sap.com/t5/crm-and-cx-blog-posts-by-sap/rate-limiting-on-sap-sales-amp-service-clo…
Understanding 429 in SAP Sales & Service Cloud v2 + ESM
SAP Sales & Service Cloud v2 (CNS v2 stack) APIs enforce rate limits to protect system stability.
Typical causes of 429:
- High-frequency polling (e.g., ticket sync in ESM)
- Bulk data replication (master data, business partners, cases, products, sales orders, sales quote, pricing, activities)
- Parallel job execution from CPI or middleware
- Extensibility Patterns (External Hooks, Autoflows…)
- UI extensions triggering backend APIs excessively
To mointor your API usage before it turns into 429 – You, as an administrator, can monitor API calls made to your tenant to track on daily basis.
Where API Usage Happens in ESM & SAP SSC v2
Common integration points:
| Scenario | API Usage Pattern |
| ESM Ticket Integration | Frequent reads/writes on ticket APIs |
| S/4HANA replication | Burst loads (bulk API calls) |
| External service providers | Continuous API traffic |
| CAP / BTP apps | Real-time API triggering |
| CPI iFlows | Batch or scheduled calls |
Where to Track API Usage
Find the API Metrics dashboard in system settings.
Go to your user menu and choose: System Settings > Usage and Statistics > API Metrics.
| The API Metrics dashboard is currently available by request only. To activate this feature in your tenant, submit a support ticket requesting access using the component: CEC-CRM-CO-OPS. |
- The daily API limit for a test tenant is 30,000.
- The daily API limit for a production tenant is 150,000 plus 1,500 times the total number of unit licenses.
For example: a tenant with 400 licenses has a limit of 150,000 plus 1,500 times 400, which equals 750,000.
Note
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Official Documentation on API Metrics : Link
