An issue has been reported in Reckon APS Tax where the following error occurs while lodging prior year returns (i.e. ELS returns):

T21 transmission error – ELS approval number and tax agent number mismatch, or ELS approval number is not registered or ELS account is locked


Following the closure of ELS some agents have received the above error when lodging ELS-wrapped income tax return (ITR) forms for prior years. This error is a valid response and the system is functioning as designed.


Affected agents should complete an ELS password reset form in the Tax Agent Portal or in Online services for agents, or call 13 72 86 Fast Key Code 3 1. If the request is received before 3:30pm AEST, the agent will be contacted within three hours.