Error "Field sales order must be filled in" while creating batch invoice job

Hi All,

We are creating a batch invoice and have selected late selection and have updated the query for filtering the orders we want to invoice.

We selected the batch group and setup recurrence and other normal setup we do for batch invoicing.

As we click OK to save the batch job we get an error "Field sales order must be filled in" and we are not able to start the batch job. Anyone with any idea why this issue is coming.

We are using Dynamics 365 U8 (1611)