Why do I receive errors when creating an invoice?

If your invoice does not comply with general or customer requirements, you receive error messages that prevent you from submitting an invoice to your customer.

You might receive error messages when creating an invoice if:

• You're using an unsupported internet browser. To see a list of supported browsers click here.
• You didn't complete all the required fields. Required fields are marked with an asterisk (*).
• Your customer has certain rules for invoicing that determine what you can and can't do on an invoice. 
• You are trying to invoice against an old purchase order version. 

If you're not sure how to resolve an invoice error, contact your customer for clarification. Your customer can explain the invoicing requirements and help you correct the errors.

SAP Business Network for Procurement & Supply Chain > Transaction Documents > Transaction (Invoicing)