Payables Open Interface Import program trigger with option Skip Validation as Yes is completed error

At present we are passing all tax calculation parameters along with invoice and on invoice validation, Tax lines are generating but Invoice validation is consuming almost 2 hours each time to complete due to volumes.

we are looking for alternative solutions to reduce the invoice processing time. we tried with option as triggering "Payables Open Interface Import program" with option Skip Validation as "Yes". Program completed in error with error message "Tax Info Not Allowed".

Please suggest how can we eliminate invoice validation along with Tax line generation while importing invoice through open interface program?