Seeking Guidance: Escrow Integration Issue in Aiken + Lucid + Plutus V3 on Preprod

Developers Cardano Integration
1

Hello Cardano Community,
I hope this message finds you well. I’m currently working on a dApp to build a local marketplace in Goma/DRC, which will enable online buying and selling with an escrow system to secure transactions.

image
image1918×891 349 KB

On the technical side, I’m using Aiken smart contracts, Lucid, and Plutus V3. However, I am encountering a challenge: when a user attempts to purchase a product, they deploy funds by signing with their wallet on preprod, but unfortunately, the funds do not reach the intended recipient, i.e., the seller.

I would sincerely appreciate any guidance or insights from this community to help me understand and resolve this issue.

You can reach me on:

Thank you very much in advance for any assistance or suggestions you may offer.

5 Likes
2

Hi Olivier, the issue usually happens because the transaction fails script validation even though the wallet signs it. Here are the 3 key things to check to fix it:

  1. Confirm the script UTxO and address
    Make sure the escrow script address is correct and the UTxO you’re spending actually exists on preprod.
  2. Verify datum & redeemer match the Aiken validator
    Most failed transfers happen because the datum or redeemer structure doesn’t match what the validator expects. Double-check the types and constructors.
  3. Check the on-chain error
  4. Log the error from Lucid when submitting the tx, it will show exactly why the script is rejecting it.
try { await tx.submit(); } catch (e) { console.log(e); }

Once you see the validation error, the fix becomes straightforward.

3 Likes
3

Hello sir,
Thank you very much for these suggestions.
I will test them and observe the resulting outputs, as I initially believed the issue was an incompatibility between Plutus V3 and Lucid, but unfortunately this has not resolved the problem so far.

4

What is the error that you are getting?

5

Bellow is the error I am getting:

prepareAdaRelease.ts:91 :cross_mark: Error while releasing funds: missing required script
Script d5c214c90928733c8a8741b40de67ded41255290af2f4d88400a3d19

By the way, the transaction is being signed by the seller: the seller confirms the delivery, the buyer releases the funds from escrow, but in the end the funds do not reach the seller.