What was the invoicing option selected?

What are the parameters in the Sales Billing Batch you are using:

There are several scenarios which allow the sales order to appear in the Sales Billing Batch list but most likely you will need to work with support to review your data and see why it is not picked up.

There is nothing I am aware that will 'force’ it to appear in the list if it does not meet the criteria for the various scenarios or the search criteria you specified in the Sales Billing Batch.

Also, for example they may have been bill_locked by another process and not released so this should be reviewed with support as well.

Hi Phil, 

Thanks for the response. I have tried both Shipping and Acceptance for the invoicing option. I usually use Billing Type = All with no other filters for parameters in the Sales Billing Batch. I have tried a few variations with no luck. Is there a way for me to tell if an order has been bill_locked?

We would need to query the database using SQL to see this and would need the sales orders affected (or at least one of them) to check.  This is why I suggested working with support on this question.

Please check if there is any service order linked to the sales order via STSI.  Those linked service order demands need to be fulfilled first to invoice the sales order.