How To Fix EPS331 - You Cannot Invoice Periodic and Interim Billings Together

EPS331 - Overview

• Message type: E = Error

• Message class: EPS - Payment Scheme

• Message number: 331

• Message text: You Cannot Invoice Periodic and Interim Billings Together

What causes this issue?

You tried to invoice a periodic billing and an interim billing together,
and are using the 'payment scheme' budget billing procedure.

System Response

The system cancels the invoicing.

How to fix this error?

1. Separate the invoicing units into periodic billing and interim
billing.
2. Use event R540 "Determine Billing Transaction and Document Types for
Open Items" to determine the billing transaction.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

EPS331 - Details

• The SAP error message EPS331, "You cannot invoice periodic and interim billings together," typically occurs in the context of billing processes, particularly when dealing with contracts or projects that involve both periodic and interim billing. This error indicates that the system has detected an attempt to process both types of billing in a single invoice, which is not allowed.
  
  Cause:
  The error arises when:
  
  Mixed Billing Types: You are trying to create an invoice that includes both periodic billing (which is usually based on a fixed schedule) and interim billing (which is typically for specific milestones or progress).
  Configuration Settings: The system settings or configuration may not allow for the combination of these two billing types in a single invoice.
  Billing Document Type: The billing document type being used may not support the combination of periodic and interim billings.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Separate Invoices: Ensure that you are creating separate