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I used to work with Blockfrost API to submit my transactions. A few days ago, I ran into this problem in which my transactions were submitted successfully (The API returned me the transaction id without any error) but the transactions were never actually processed (When I looked for transactions in the Cardanoscan, nothing was found). I decided to submit my transactions on another node, and it did work fine for a couple of days, and now I have the same issue. Does anyone know where the problem might be?

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The chain has been pretty congested since sundaeswap launched. It may take some time between transaction submission and inclusion into a block. If your TTL or --invalid-hereafter parameter is too short, the TX may be submitted to the mempool but be invalid by the time it is to be included in a block. Try setting the TTL to something like 10000+ and see if that helps.

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  • Thanks! Would set TTL something very very high cause any problem?
    – Foad
    Jan 23, 2022 at 15:00
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    None that I can think of off the top :)
    – zhekson
    Jan 23, 2022 at 15:01
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    @Foad You could omit the TTL entirely
    – grim_i_am
    Apr 21, 2022 at 9:00

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