How To Fix AH390 - In variant &1 an input operand is missing in step &2

AH390 - Overview

• Message type: E = Error

• Message class: AH - IS-U billing (master data)

• Message number: 390

• Message text: In variant &1 an input operand is missing in step &2

What causes this issue?

An input operand is missing in step &V2& for variant &V1&.

System Response

The rate cannot be saved.

How to fix this error?

Maintain the missing values or delete the rate step.

Error message extract from SAP system. Copyright SAP SE.

AH390 - Details

• The SAP error message AH390 indicates that there is a missing input operand in a specific step of a variant. This typically occurs in the context of variant configuration or when executing a report or program that uses variants to define parameters.
  
  Cause:
  The error is caused by one or more of the following reasons:
  
  Missing Input Operand: The variant defined for the report or program does not include all the required input parameters for the specified step.
  Incorrect Variant Configuration: The variant may have been incorrectly configured, leading to missing or incomplete data.
  Changes in Program Logic: If the underlying program or report has been modified (e.g., new parameters added), the existing variant may no longer be valid.
  User Authorization Issues: Sometimes, the user may not have the necessary authorizations to access certain parameters, leading to the perception that they are missing.
  
  
  Solution:
  To resolve the AH390 error, you can take the following steps:
  
  
  Check the Variant Configuration:
  
  Go