Invalid Company Information provided. Please check your ABN/WPN, Company Name and Branch number match those set in Reckon GovConnect Single Touch Payroll for your company.
This error came up and I have definitely logged in and connected to the ATO portal as required to.
Check out the info in this KB article, in particular the legal name format (it must be written the same way as displayed in GovConnect STP & case sensitive) and branch number.
“Invalid Company Information error” in Govconnect STP when submitting pays from Reckon Accounts