Error: failed to send transaction: Transaction simulation failed: Error processing Instruction 0: custom program error: 0x7d2

✗ Transaction failed

  Error: ConstraintHasOne
  Code:  0x7d2 (2002)
  Msg:   A has_one constraint was violated — account field does not match expected value
  Program: my_program (9uvbWC...)

  CPI call stack:
  └─ ✗ my_program (9uvbWC...) ← failed here
     Error: A has_one constraint was violated — account field does not match expected value
     └─ ✓ TokenkegQfeZy... (Token Program)
     └─ ✗ my_program::validate_authority ← failed here

npm install -g anchor-debug
# or use directly with npx
npx anchor-debug --help

anchor test 2>&1 | npx anchor-debug

npx anchor-debug tx <SIGNATURE> --cluster devnet
npx anchor-debug tx <SIGNATURE> --cluster mainnet-beta
npx anchor-debug tx <SIGNATURE> --cluster http://localhost:8899

npx anchor-debug test
npx anchor-debug test --skip-build

{
  "mcpServers": {
    "anchor-debug": {
      "command": "npx",
      "args": ["anchor-debug", "mcp"]
    }
  }
}

{
  "failed": true,
  "error": {
    "name": "ConstraintHasOne",
    "code": 2002,
    "hex": "0x7d2",
    "message": "A has_one constraint was violated — account field does not match expected value",
    "category": "constraint"
  },
  "failedProgram": "my_program",
  "failedNode": {
    "program": "my_program",
    "depth": 2,
    "errorMessage": "A has_one constraint was violated"
  },
  "cpiStack": [...]
}

import { parseLogsFromString, formatResult } from "anchor-debug";

const logs = [
  "Program MyProg invoke [1]",
  "Program MyProg failed: custom program error: 0x7d2",
];

const parsed = parseLogsFromString(logs.join("\n"));
console.log(formatResult(parsed));