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E1212 — Unsupported instruction/opcode

PropertyValue
Code1212
SlugE1212
Categoryvalidation (Validation)

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What happened

Unsupported instruction/opcode.

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Why it happened

The actor code contains an instruction or opcode not supported on this chain version.

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How to fix

Use a supported instruction. Check the chain version’s compatibility documentation.

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Receipt example

{
  "code": 1212,
  "slug": "E1212",
  "category": "validation",
  "what": "Unsupported instruction/opcode",
  "fix": "Use a supported instruction.",
  "docs_url": "https://docs.cowboy.inc/errors/E1212"
}

All Error Codes

View the complete error code reference