GB Payroll RTI-RTI file not Balanced for Employee with two different bank accounts

Hi Friends,

I am new to UK Payroll and have very least knowledge on RTI.

There is one employee where the payment is sent to 2 diffrent Bank accounts due to split in IT0009.

This has caused the RTI file NOT to balance.

Please advise

a) What should be done in such cases

b) Going forward what should be the recommendation to the client for what process to follow to avoid such situations.

Thanks in Advance.

Sunny Singh