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Hi @Pumpfun, possible @pump-fun/pump-swap-sdk issue:
PumpSwap AMM buy/sell can fail with BuybackFeeRecipientMissing / BuybackFeeRecipientNotAuthorized.
The AMM instruction seems to miss buyback remaining accounts. Adding poolV2Pda, a Pump SDK buyback recipient, and ATA(quoteMint, buybackRecipient) made both buy and sell succeed.
Could the SDK team confirm/update this? I couldn’t find a public GitHub repo/issues page for pump-swap-sdk, so reporting here.