Decoding error 1010 on Midnight: What "Invalid Transaction" actually means (opens in new tab)

What this guide covers 1010: Invalid Transaction often leaves Midnight developers with an error that is too generic to fix on its own. In most cases, 1010 is the outer JSON-RPC / author-RPC error, not the full diagnosis. The more useful clue is often in error.data, such as Custom error: 186. The sections below explain the 1010 error structure, how to read Custom error: N, how to interpret custom codes 139, 154, 168, 170, and 186, and how Midnight’s five-dimensional ledger cost model relates t...