TaxLine Channel Liable REST-API Improvement

As of the 2024-01 version of the REST Order APIs, channel_liable field on the TaxLine has been updated to reflect the value indicated by the app. The behaviors now align between the REST and GraphQL endpoints.

The channel_liable field lets developers inform merchants that another party is responsible for sales tax remittance, which then helps merchants better understand the tax that they are responsible for.

channel_liable can contain the following values:

• true indicates that the channel is responsible for remittance of the tax line
• false indicates that the channel is not responsible for remittance of the tax line

If the channel_liable field is not populated, a value of false will be assumed.