Batch requests

custombatch is a common method that allows you to group several API calls, known as "entries" into one single HTTP request. Each entry only references a single method call.

Custom batch is a good choice when:

• You've just started using the API and have a lot of product data to upload.
• You need to synchronize local data with the server by sending lots of updates and deletes.

Make batch requests

Sending batch requests is similar to sending API calls in parallel. Note that there is no guarantee that the order of entries defined in the request will be in the order that they are executed. We recommend that you don't use interdependent calls in a single batch request (such as creating and updating the same shipment).

Similarly, the responses received for batched requests may be returned in a different order to that of the request entries. The BatchId can be used to correlate requests and responses since the responses may be returned out of sequence.

You can batch requests in the API by calling the appropriate custombatch method:

Limits

To avoid errors when uploading large batches, we recommend limiting the size of custombatch requests to a maximum of 1,000 entries. The following maximums apply to custombatch requests:

• 50,000 entries per custombatch request
• 32Mb transfer size

Calls that exceed the maximums result in the following request_too_large errors:

• "Too many requests in a batch."
• "Request payload size exceeds the limit: %d bytes."