Unable to generate CSR on Policy Manager

Products

• CA API Gateway
• API SECURITY
• CA API Gateway Precision API Monitoring Module for API Gateway (Layer 7)
• CA API Gateway Enterprise Service Manager (Layer 7)
• CA Microgateway

Issue/Introduction

When you click on Generate CSR on Private Key Properties window, CA API Policy Manager Error says:
The Policy Manager encountered an internal error or misconfiguration and was unable to complete the operation.

Environment

Release : 9.3

Component : API GATEWAY

Cause

The 9.4 Policy Manager is used to connect to a 9.3 API Gateway 

Resolution

Make sure the version of the policy manager and Gateway is the same as the security configurations of the policy manager are different for different versions.

Eg. 9.3 Gateway and 9.3 Policy Manager

Additional Information

To know more about CSR refer to the below document:
https://knowledge.broadcom.com/external/article?articleId=155851