# AA15 initCode must create sender

`AA15 initCode must create sender` is an ERC-4337 EntryPoint error that means the factory in the `initCode` did not deploy a smart account or did not return its address.

The smart account deployment process with the `initCode` does not return any `sender` address. There are two possible reasons:

* The `initCode` factory is not creating an account.
* The `initCode` factory is creating an account, but is not implemented correctly as it is not returning the deployed `sender` address.

## Possible solutions

* Verify that the factory address in the `initCode` is correct (the factory address is the first 20 bytes of the `initCode`).
* Verify that the `initCode` factory is implemented correctly. The factory must deploy the smart account and return the deployed `sender` address.
* If all else fails, investigate why the `initCode` factory does not return a `sender` address using tools like [Tenderly](https://tenderly.co/).