digital signature in invoice vf03 sap

[hajar_khalidi]

hello team,

when I executed an invoice output I got an error message indicating that the printing characteristics are missing after verification I found that the digital signature does not exist for my invoice.

I thank you for helping me to know how I can add it. I would like to inform you that the digital signature for my company has been well defined in the customazing

The print parameter in this table sipt_vbrk is empty

[hajar_khalidi]

Issue is that the SPIT_VBRK table doesn't have print character

[hajar_khalidi]

Print Character not assigned for billing document