Thank you @Wilfred
So I looked at the Help Center link and tried with ETH_TEST3.
I’ve resubmitted a transaction, Can you advise on this error please?
Regarding the sandbox expiry, I will take this up separately with other my contacts at Fireblocks. Thank you.
Related questions to all of this. You will see my issues reported here : C# .NET support please - Support - Fireblocks Developer Community and here: How to call read method using postman api create transaction method - Developer Discussion - Fireblocks Developer Community
Could you advise please on the best way to work with Fireblocks API from C# API?
As per support issues, I would like to use Open API and C# to strong define the contracts of the API. Secondly, from the second support issue how would we work with an external RPC provider, in C# and .NET?
Your experience with other clients using C# and .NET would be helpful.
Thank you
David