When I want to settle Framework order. On Information Text, I had a message "Invoicing plan: No message was found for partner 100454/company code 2000"

According to SAP Notes, when an invoicing plan is settled, you can create a document/e-mail or etc to notify your supplier or internal personnel. The IMG setting (SAP 4.7) can be set in Material Mgmt --> Logistic Invoice Verification --> Message determination.