---
agentTools:
  projectIndex: https://docs.decentro.tech/llms.txt
---

# Fabric Release Notes | Version 5.16

**Summary**: This release introduces critical enhancements to KYC workflows, authentication security, and API reliability.

## Release Highlights

### I. CKYC Search and Download on Self-hosted Docker Deployment

Enhanced `KYC_CKYC_BULK_SEARCH` API (`POST /v2/kyc/ckyc/bulk/search`) and `KYC_CKYC_BULK_DOWNLOAD` API (`POST /v2/kyc/ckyc/bulk/download`) with asynchronous processing:

* Accepts bulk records in request.
* Returns immediate acknowledgment on upload of the request.
* Delivers per-record results via callback for real-time tracking and reconciliation.

### II. CKYC Validations

Added format validation guidance for:

* Driving License Number
* Passport Number

### III. Standardised Response for CKYC Bulk Search & Download

* Implemented standardized JSON response structure for CKYC Bulk Search & Download without API integration.
* Ensures consistent, parseable output across all CKYC API interactions.

### IV. JWT Token Authentication Support for v2 APIs

* Introduced a new authentication mechanism via the `/v2/auth/token` endpoint.
* Clients can now generate short-lived JWT tokens using existing client credentials.
* Offers a secure, modern alternative to traditional `client_id` / `client_secret` auth for Fabric v2 APIs.

### V. Enhanced Reliability for MCA APIs with Parallel Retry Mechanism

* Implemented a parallel thread-based retry mechanism for MCA APIs.
* Improves CIN retrieval speed and reliability for `GSTIN_DETAILED` document types.
* Uses multiple concurrent attempts for better consistency and reduced latency.