Hello, We're trying to use V2 of the API to create and process batches to automate the process of generating shipping labels in bulk. We have the document format for Label set to 4" x 6" (w/ Packing Slip) under Settings > Printing > Printing Setup. So, when we create labels manually on the website, the generated document contains both the label and the packing slip for each of the shipments, which is great. However, when using the API, there's no way to include the packing slips in the PDF file that gets generated after processing a batch. To make matters worse, even if we try to print the labels on the website, packing slips are still not included for batches that were processed using the API. This makes the feature completely unusable for us. According to the docs, there's a label_layout option but the only supported values are 4x6 and letter. To fix this, I suggest you either add the missing options (e.g., 4x6_with_packing_slips and letter_with_packing_slips) or add a default option that respects the current settings.
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