Inner Transactions

Algorand Smart Contracts have the ability to send transactions from the application’s contract address. Transactions sent from a contract address via an application call is called an inner transaction.

Inner Transaction

To send a single inner transaction, one of the following methods can be used.

Function	Usage
sendPayment	Send a payment transaction
sendAssetTransfer	Send an asset transfer transaction
sendAssetCreation	Send a transcation that creates a transcation
sendAssetConfig	Send an asset config transaction
sendAssetFreeze	Send an asset freeze transaction
sendAppCall	Send an application call
sendMethodCall	Call an ABI method of another app
sendOnlineKeyRegistration	Send a rekreg transaction to register offline
sendOfflineKeyRegistration	Send a rekreg transaction to register offline

Inner Transaction Group

You can also send multiple inner transactions in the same group. To add transactions to a group, this.pendingGroup is used. It should be noted that at any given time only one group can be constructed at a time. This means

Function	Usage
this.pendingGroup.addPayment	Add a payment transaction
this.pendingGroup.addAssetTransfer	Add an asset transfer transaction
this.pendingGroup.addAssetCreation	Add a transcation that creates a transcation
this.pendingGroup.addAssetConfig	Add an asset config transaction
this.pendingGroup.addAssetFreeze	Add an asset freeze transaction
this.pendingGroup.addAppCall	Add an application call
this.pendingGroup.addMethodCall	Add an ABI method call to another app
this.pendingGroup.addOnlineKeyRegistration	Add a rekreg transaction to register offline
this.pendingGroup.addOfflineKeyRegistration	Add a rekreg transaction to register offline

Once transactions have been added to the pending group, the group can be submitted via this.pendingGroup.submit()

Inner Transaction Fields

The fields of the most recent inner transaction can be read via this.itxn