{% docs payload_function %} The specific function being called within the transaction payload, identifying the smart contract method to be executed. **Data type:** String **Example:** - 0x1::coin::transfer - 0x1::coin::register - 0xf22bede237a07e121b56d91a491eb7bcdfd1f5907926a9e58338f964a01b17fa::coin::mint **Business Context:** - Essential for categorizing transactions by function type and smart contract interaction. - Critical for DeFi protocol analysis and function call pattern recognition. - Enables transaction filtering and specific function usage analytics. {% enddocs %}