> For the complete documentation index, see [llms.txt](https://docs.sannybuilder.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.sannybuilder.com/troubleshooting/errors/0011.md).

# 0011: Unknown opcode

The disassembler finds an opcode that has not been defined in the [INI file](/edit-modes/opcodes-list-scm.ini.md).

**Possible solutions:** either update opcode definitions or toggle the [`IGNORE_UNKNOWN`](/editor/debug-options.md#ignore_unknown) debug option.\\