SignerChange in a transaction

Hi there, Yes, the way you are updating your signer is correct. There're few places you'd notice when updating signer: 1. CustomId is same with old signer. 2.When building new Signer, you inject all information about the signer, otherwise the information not include in the new signer will get lost. But this is not related to your issue I guess. The attachment is the code I used to test the issue where #1. I created a package, #2. then updated "Signer1", changed its email, #3. finally resent the package. The whole process works well at my side. So you can have a try on my code to see whether it works for you. And if this still doesn't work, can you share the screenshot when you encountering error? Hope this could help! Duo

Hi there, Per our conversation, offline, the issue was not with the above code but because you were using a token created for the original signer. The solution to this being to generate a new signing URL / auth token, for the changed signer. Hope this could help! Duo