Reprice Subscription REST API is not working for all Subscriptions

Summary:

I am using REST API to reprice subscription. It works for some of the subscriptions but for a large set of subscriptions Postman is giving 400 Bad Request error with no other details.

Content (required):

Using PATCH Operation.

REST URI : http://<hostname>/crmRestApi/resources/11.13.18.05/subscriptions/<subscription_number>

Request Payload :

{

"RepriceFlag" : "true"

}

Reference :

Web Service For Subscription Reprice Action (Doc ID 2770487.1)

Version (include the version you are using, if applicable):

22B

Code Snippet (add any code snippets that support your topic, if applicable):