Thank you for your post. I'd like to extend you a warm welcome to the Community Forum. I hope you find it a valuable resource.
Generally this error means that there's an invalid character somewhere in your payroll information in MYOB. You'll need to check and remove any invalid characters in your employee cards or in the payroll category names.
I'll provide you this Help Article, Fix rejected reports in Single Touch Payroll, that has detailed information to assist with this.
Are we able to solved your concern? If YES, please click on "Accept as Solution". If NO, please feel free to reply on this post and we are more than happy to assist.
Cheers,
Princess
