Restrict invoice from printing if finance document is not created during invoice creation

If you dont want to allow user to print out invoice which finance document is not created during invoice creation using tcode: VF01, you may set a routine in the output type as below:

Select rountine as '62' as below.

When a Billing/Invoice document is not fully created yet like below:

Then user is not able to print out invoice and will got the below error:

To prevent cancelling of invoice which accounting document which already cleared.

To prevent cancelling of invoice which accounting document which already cleared. Please set the below setting.

Remember to set routine as 29 and when user trying to cancel the invoice through VF11, the user may encounter an error as below: