ExecuteMultiCall

Atomically execute a batch of operations through Canton’s Execute_MultiCall DAR choice. Each sub-operation is individually gated against its own functional group — a disabled group will cause the whole batch to be rejected. Invoked through the two-phase transaction flow with:

operation = TRANSACTION_OPERATION_EXECUTE_MULTICALL
params.execute_multicall = ExecuteMultiCallParams { … }

Params

MultiCallOp[]

required

Ordered list of sub-operations to execute atomically.

string[]

Canton Coin amulets to be consumed by the batch.

string[]

CIP-56 holding contract IDs to be consumed by the batch.

message ExecuteMultiCallParams {
  repeated MultiCallOp operations   = 1;
  repeated string      amulet_cids  = 2;
  repeated string      holding_cids = 3;
}

All sub-operations succeed or the entire batch is rolled back. MultiCall is the right tool when two or more actions must be strictly atomic (e.g. split + transfer in the same commit).

Call GetAmulets and GetActiveContracts to pre-select the amulet_cids and holding_cids the batch should consume.

Introduction

Core (read-only)

Transfer

Preapproval

Fee Payment

DvP (Delivery vs Payment)

CIP-56 Tokens

Recurring Payments

Onboarding

MultiCall

User Service

Bridge

ExecuteMultiCall

Params

See also

​Params

​See also

Params

See also