The referenced event declaration does not have any indexed argument or have less than three indexed arguments that are a primitive type.
Example:
event FeeUpdated(uint256 oldFee, uint256 newFee);
Recommendation:
Apart from aiding off-chain integrators in consuming and filtering such an event, primitive types that are set as indexedwill result in a gas optimization due to reduced memory costs. As such, we advise the indexed keyword to be introduced to up to three different primitive types in total optimizing the referenced event declaration.
RWA-01S: Suboptimal Event Declaration
Description:
The referenced
eventdeclaration does not have anyindexedargument or have less than threeindexedarguments that are a primitive type.Example:
Recommendation:
Apart from aiding off-chain integrators in consuming and filtering such an event, primitive types that are set as
indexedwill result in a gas optimization due to reduced memory costs. As such, we advise theindexedkeyword to be introduced to up to three different primitive types in total optimizing the referencedeventdeclaration.