<p>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.</p>

CC BY-SA 4.0
2022-01-23T15:00:37.433Z
Thanks! Would set TTL something very very high cause any problem?
Foad
CC BY-SA 4.0
2022-01-23T15:01:43.680Z
None that I can think of off the top :)
zhekson
CC BY-SA 4.0
2022-04-21T09:00:21.713Z
@Foad You could omit the TTL entirely
grim_i_am
CC BY-SA 4.0
2022-01-23T14:54:34.393Z
2022-01-23T14:54:34.393Z
zhekson
<p>I used to work with <a href="https://blockfrost.io/" rel="nofollow noreferrer">Blockfrost</a> 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 <a href="https://cardanoscan.io/" rel="nofollow noreferrer">Cardanoscan</a>, nothing was found). I decided to submit my transactions on <a href="https://dandelion.link/" rel="nofollow noreferrer">another node</a>, 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?</p>

<cardano-cli><cardano-node><transaction><api><blockfrost>
Received the transaction id but the transaction never happened
# Received the transaction id but the transaction never happened

(Asked by: username_0 on 2022-01-23)

I used to work with [Blockfrost](https://blockfrost.io/) 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](https://cardanoscan.io/), nothing was found). I decided to submit my transactions on [another node](https://dandelion.link/), 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?

**Tags:** cardano-cli, cardano-node, transaction, api, blockfrost

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## 1 answers

### Answer by username_1 on 2022-01-23. Score: 4 | Accepted answer

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.

> **Comments:**
> **username_0**: Thanks! Would set TTL something very very high cause any problem?  
> **username_1**: None that I can think of off the top :)  
> **username_2**: @Foad You could omit the TTL entirely  

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