Unable to associate line_item to quote via API

I am trying to associate line_items with quote using API, but seems like its not working. I am using the guidelines provided in documentation.
Here is what I am doing:
1. Make a post call to: and provide the line_item in the associations.
2. It shows as success in the response, but when I check at Hubspot UI, it doesnot show any line_items attached with it.
What am I doing wrong here?

Hey, @SUsman :waving_hand: Thanks for your question. You mentioned using the documentation. In your example screenshot, it looks like you are using the v3 endpoint, but the documentation is using the v4 endpoint for Associations. Quote API — Making Associations.

Also, you are creating your quote in one call and making the association(s) in a second or separate call, correct? Or are you following the Single request example?

Lastly, can you link me to the doc you are following, please? I’d like to set up a quick test if possible.

Best,

Jaycee