JWT Accepted by One Service but Rejected by Another
What this guide solves: The same token passes one backend and receives 401 from a second microservice. Record the context before changing a server, account…
Read solution →API
Explore practical solutions and troubleshooting guides for this topic.
Webhook Delivery Shows Success but Background Job Never Processes It
What this guide solves: The provider sees HTTP 200 yet no downstream work completes. Record the context before changing a server, account or data store.…
Read solution →API Client SSL Error Only in a Minimal Docker Image
The key distinction: Requests fail TLS validation from an Alpine or slim image while the host succeeds. The visible error may appear at the last…
Read solution →REST API 429 Retried Requests Create Duplicate Orders
The key distinction: A client retries rate-limited order creation and sometimes creates a second order. The visible error may appear at the last stage of…
Read solution →REST API Pagination Skips Records During Concurrent Updates
What this guide solves: A long export misses or repeats objects when records are added mid-run. Record the context before changing a server, account or…
Read solution →OAuth Redirect URI Mismatch After Reverse Proxy Migration
Login is rejected because redirect_uri differs from the provider's registered callback. This guide narrows the failure to the responsible component rather than applying broad resets.…
Read solution →GraphQL API Works in Playground but Returns 401 from a Browser
GraphQL queries succeed in a developer tool but fail in a browser app. This guide narrows the failure to the responsible component rather than applying…
Read solution →Webhook Signature Check Fails Because Raw Body Was Modified
What this guide solves: A trusted provider's valid webhook is rejected after passing through middleware. Record the context before changing a server, account or data…
Read solution →WordPress REST API 403 Forbidden: Identify WAF, Authentication and Permission Failures
A REST API request is denied, but the source of the 403 may be WordPress permissions, a security plugin or an upstream firewall.
Read solution →