During your sync operation, you receive an error showing, Unexpected character encountered while parsing value
on target application, which is Shopify here.

Cause

There might be a number of reasons for this error:

• HTTP method mismatch. For example, the API requires POST method to execute and user provided PUT.
• Schema mismatch, means the API schema is different from what sent to it.
• File Format is use differently. For example, If JSON is required, user have used XML.
• Packet size exceeding limit during or post transformation, hence packet size must be reduced by applying split and merge filter.

Resolution

The error can be resolved as given below:

The data sent to Shopify is not in accordance with the API Documentation  Refer,  Shopify API Documentation and fix accordingly.

If you are unsure, discuss here.

Also Read: Shopify launched its own customer shopping app – Shop, which includes both Shopify Arrive and Pay. Here’s everything you need to know about Shopify Shop!