ADMIN REST API POST /refund regression

Hi there,

Since around 2025-05-20 15:30:00 utc we have been experiencing a regression in the /refund endpoint for some of our merchants.

We are now receiving the error:

refund_line_items cannot refund more than refundable quantity

Things to note:

We’ve also noted that refunding on its own is fine. Creating a return on it’s own is fine, it’s just doing both where it breaks.

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