Market sell order have minimum size although there was announcement that minimum order sizes will be removed - https://www.coinbase.com/blog/upcoming-changes-to-order-size-limits.
From blog post:
We will maintain the quote min order size limit as the check on notional. The check will apply to all orders where funds in the quote currency are specified (e.g. limit orders and market buys).
Market sell is specified in base currency. Trying to sell 1 SHIB I am getting following error:
{"success":false,"failure_reason":"UNKNOWN_FAILURE_REASON","order_id":"","error_response":{"error":"UNKNOWN_FAILURE_REASON","message":"","error_details":"","preview_failure_reason":"PREVIEW_INVALID_BASE_SIZE_TOO_SMALL"},"order_configuration":null}
I can sell 1 SHIB from Coinbase Pro web interface and/or from API.
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Hello @muktupavels! We’ve received your concern and we’re already looking into it. We are now working with the teams to ensure this is addressed accurately for you. We will get back to you once we have more information. Keep in touch!
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Hello @muktupavels! Apologies for the late response. We appreciate you in exhausting our helpful sites and documentation regarding your concern. It was indeed mentioned here that the base min order size (API field name: base_min_size) together with base_max_size, max_market_funds from our market parameters was deprecated last June 30, 2022 but this is only for Coinbase Exchange/Pro only. The Advance Trade API still holds the “base_min_size” and if the value is too small, then the call will get rejected followed by the "PREVIEW_INVALID_BASE_SIZE_TOO_SMALL" error. It is still active for now but eventually, the base_min_size will be soon also deprecated under this product.
Appreciate your patience and understanding! Thank you!
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