NEST error message:
IFC01916 - You must provide a valid header or trailer record. Please ensure the payment source and frequency are correct and that the payment due date is in the correct format - it should match an existing contribution schedule on the system. Please check your data and try again.
The issue is typically caused by a mismatch of Contribution Plan (NEST Group) or subGroup (NEST Payment Source) between the NEST records and the payroll data. Please review and amend your settings in payroll as required.
Alternatively, the error could be caused by there being no active members in the scheme in this period, so NEST has no expectation of data for the period being submitted. You can check this on the NEST Manage Workers area, to see if there are any active members - and then proceed as required to either set some enrolments in payroll, or ensure the workers are set as not in the scheme in payroll.