This hook is triggered after editing child-object data, specifically after input blur, and after UI events/calculation logic have finished executing. It allows extra business actions, including but not limited to data validation.

• Validate data

Parameters

Parameter	Description	Type
Common parameters	See details	--
objApiName	Child object apiName	String
recordType	Child object record type	String
dataIndex	Row IDs of the edited child-object data	Array
fieldName	Edited field	String
changeData	Changed field data	Object
changeFields	All property keys changed while editing the field	Array

Notes

1. Difference between fieldName and changeFields

Usually, a changed field may correspond to only one field name, but additional properties are often required for storage. For example, for a lookup field, the API name may be field_1n1xs__c, but in actual storage two properties are often required: one is field_1n1xs__c, which stores the related record ID; the other is field_1n1xs__c__r, which stores the main property of the related record for display.