[#ScriptError_t]
= ScriptError_t
:mrdocs:

Error codes returned by the Bitcoin Script interpreter.

== Synopsis

Declared in `<script/script_error.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
enum ScriptError_t;
----

== Members

[cols="1,4"]
|===
| Name| Description
| `SCRIPT_ERR_OK` 
| No error; the script evaluated successfully.
| `SCRIPT_ERR_UNKNOWN_ERROR` 
| An unspecified or unclassified evaluation error occurred.
| `SCRIPT_ERR_EVAL_FALSE` 
| The script completed but left a false value on the top of the stack.
| `SCRIPT_ERR_OP_RETURN` 
| Execution reached an OP_RETURN opcode, which marks the output as unspendable.
| `SCRIPT_ERR_SCRIPTNUM` 
| A script number operand was out of range or not minimally encoded.
| `SCRIPT_ERR_SCRIPT_SIZE` 
| The script exceeded the maximum allowed byte size.
| `SCRIPT_ERR_PUSH_SIZE` 
| A push operation exceeded the maximum allowed element size.
| `SCRIPT_ERR_OP_COUNT` 
| The script exceeded the maximum number of non‐push opcodes.
| `SCRIPT_ERR_STACK_SIZE` 
| The combined stack and altstack exceeded the maximum allowed size.
| `SCRIPT_ERR_SIG_COUNT` 
| A CHECKMULTISIG operation specified an invalid number of signatures.
| `SCRIPT_ERR_PUBKEY_COUNT` 
| A CHECKMULTISIG operation specified an invalid number of public keys.
| `SCRIPT_ERR_VERIFY` 
| An OP_VERIFY operation failed because the top stack value was false.
| `SCRIPT_ERR_EQUALVERIFY` 
| An OP_EQUALVERIFY operation failed because the two values were not equal.
| `SCRIPT_ERR_CHECKMULTISIGVERIFY` 
| An OP_CHECKMULTISIGVERIFY operation failed signature verification.
| `SCRIPT_ERR_CHECKSIGVERIFY` 
| An OP_CHECKSIGVERIFY operation failed signature verification.
| `SCRIPT_ERR_NUMEQUALVERIFY` 
| An OP_NUMEQUALVERIFY operation failed because the two numbers were not equal.
| `SCRIPT_ERR_BAD_OPCODE` 
| The script contained an unknown or invalid opcode.
| `SCRIPT_ERR_DISABLED_OPCODE` 
| The script used an opcode that has been disabled.
| `SCRIPT_ERR_INVALID_STACK_OPERATION` 
| An operation was attempted on a stack with too few elements.
| `SCRIPT_ERR_INVALID_ALTSTACK_OPERATION` 
| An operation was attempted on an empty altstack.
| `SCRIPT_ERR_UNBALANCED_CONDITIONAL` 
| The script had mismatched OP_IF/OP_ELSE/OP_ENDIF conditionals.
| `SCRIPT_ERR_NEGATIVE_LOCKTIME` 
| A locktime value was negative.
| `SCRIPT_ERR_UNSATISFIED_LOCKTIME` 
| The transaction's locktime or sequence did not satisfy the required value.
| `SCRIPT_ERR_SIG_HASHTYPE` 
| A signature used an invalid or undefined sighash type.
| `SCRIPT_ERR_SIG_DER` 
| A signature was not a valid strict DER encoding.
| `SCRIPT_ERR_MINIMALDATA` 
| A data push did not use the minimal possible encoding.
| `SCRIPT_ERR_SIG_PUSHONLY` 
| A scriptSig contained non‐push operations where only pushes are allowed.
| `SCRIPT_ERR_SIG_HIGH_S` 
| A signature had a high S value, violating the low‐S requirement.
| `SCRIPT_ERR_SIG_NULLDUMMY` 
| The extra CHECKMULTISIG dummy argument was not an empty byte vector.
| `SCRIPT_ERR_PUBKEYTYPE` 
| A public key was not encoded in the required (compressed or uncompressed) form.
| `SCRIPT_ERR_CLEANSTACK` 
| The stack was not clean (held more than one element) after evaluation.
| `SCRIPT_ERR_MINIMALIF` 
| An OP_IF/OP_NOTIF argument was not a minimal true/false value.
| `SCRIPT_ERR_SIG_NULLFAIL` 
| A failed signature check did not provide an empty signature.
| `SCRIPT_ERR_DISCOURAGE_UPGRADABLE_NOPS` 
| The script used an upgradable NOP that policy discourages.
| `SCRIPT_ERR_DISCOURAGE_UPGRADABLE_WITNESS_PROGRAM` 
| The script used a witness program version reserved for future upgrades.
| `SCRIPT_ERR_DISCOURAGE_UPGRADABLE_TAPROOT_VERSION` 
| The script used a Taproot leaf version reserved for future upgrades.
| `SCRIPT_ERR_DISCOURAGE_OP_SUCCESS` 
| The Tapscript used an OP_SUCCESS opcode reserved for future upgrades.
| `SCRIPT_ERR_DISCOURAGE_UPGRADABLE_PUBKEYTYPE` 
| The script used a public key type reserved for future upgrades.
| `SCRIPT_ERR_WITNESS_PROGRAM_WRONG_LENGTH` 
| The witness program had a length invalid for its version.
| `SCRIPT_ERR_WITNESS_PROGRAM_WITNESS_EMPTY` 
| The witness for a witness program was empty.
| `SCRIPT_ERR_WITNESS_PROGRAM_MISMATCH` 
| The witness did not match the committed witness program.
| `SCRIPT_ERR_WITNESS_MALLEATED` 
| A native witness program had a non‐empty scriptSig.
| `SCRIPT_ERR_WITNESS_MALLEATED_P2SH` 
| A P2SH‐wrapped witness program had extra scriptSig data.
| `SCRIPT_ERR_WITNESS_UNEXPECTED` 
| Witness data was provided for a non‐witness input.
| `SCRIPT_ERR_WITNESS_PUBKEYTYPE` 
| A witness public key was not compressed as required.
| `SCRIPT_ERR_SCHNORR_SIG_SIZE` 
| A Schnorr signature had an invalid length.
| `SCRIPT_ERR_SCHNORR_SIG_HASHTYPE` 
| A Schnorr signature used an invalid sighash type.
| `SCRIPT_ERR_SCHNORR_SIG` 
| A Schnorr signature failed verification.
| `SCRIPT_ERR_TAPROOT_WRONG_CONTROL_SIZE` 
| A Taproot control block had an invalid size.
| `SCRIPT_ERR_TAPSCRIPT_VALIDATION_WEIGHT` 
| The Tapscript exceeded its signature validation weight budget.
| `SCRIPT_ERR_TAPSCRIPT_CHECKMULTISIG` 
| OP_CHECKMULTISIG(VERIFY) was used in Tapscript, where it is disallowed.
| `SCRIPT_ERR_TAPSCRIPT_MINIMALIF` 
| A Tapscript OP_IF/OP_NOTIF argument was not a minimal true/false value.
| `SCRIPT_ERR_TAPSCRIPT_EMPTY_PUBKEY` 
| A Tapscript signature check used an empty public key.
| `SCRIPT_ERR_OP_CODESEPARATOR` 
| OP_CODESEPARATOR was used where it is not permitted.
| `SCRIPT_ERR_SIG_FINDANDDELETE` 
| A signature was found in the scriptCode subject to FindAndDelete.
| `SCRIPT_ERR_ERROR_COUNT` 
| Sentinel value equal to the number of defined error codes.
|===



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