This event is invoked whenever a new child record is added. This can be an Apex web service or JavaScript code snippet. This event is invoked after any value map configured for new records is applied and after any updates because of lookup form-fill (in the case of Multi-Add) are applied.

A standard SFM transaction which invokes After Add Record web service is 'Manage Work Order Lines - Usage'. This web service sets the value of Is Billable field in Work Detail record, based on the values of configuration settings SET015 and SET016 (module Work Order, submodule Create Work Order Lines VF).