How To Fix AH642 - Device &1 register number &3 has no rate type on &4

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 642

• Message text: Device &1 register number &3 has no rate type on &4

What causes this issue?

The register device number &V1& (equipment number &V2&) register number
&V3& is relevant to billing on &V4&. However, no rate type has been
specified.
You should take note of the fact that register relationships mean that
counters are required in certain billing instances, although the
indicator <DS:DE.E_ZWNABR>Register not relevant for billing</> has been
set. A rate type must be maintained in this case.
For example: a rate type must be maintained if a counter is a secondary
counter to a primary counter. Only in this way can the deducted
consumption be determined. The secondary counter is not billed.

System Response

The register can neither be billed nor extrapolated.

How to fix this error?

Please maintain a rate type.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AH642 - Device &1 register number &3 has no rate type on &4 ?

  The SAP error message AH642 indicates that a specific device (identified by the device number and register number) does not have a rate type assigned to it on a particular date. This error typically occurs in the context of utility billing or device management within SAP IS-U (Industry Solution for Utilities).
  Cause:
  
  Missing Rate Type: The primary cause of this error is that the device (meter) does not have a rate type defined for the specified register on the given date. Rate types are essential for determining how consumption is billed.
  Configuration Issues: There may be configuration issues in the device master data or in the rate type settings.
  Data Entry Errors: Incorrect or incomplete data entry when setting up the device or its registers can lead to this error.
  Time Frame Issues: The rate type may not be valid for the date specified, possibly due to changes in pricing or rate structures.
  
  Solution:
  
  
  Check Device Master Data: 
  
  Navigate to the device master data in SAP and verify that the rate type is correctly assigned to the device and its registers.
  Ensure that the rate type is valid for the date in question.
  
  
  
  Assign Rate Type:
  
  If the rate type is missing, you will need to assign a valid rate type to the device register. This can typically be done in the device master data maintenance transaction (e.g., transaction code EAM or similar).
  
  
  
  Review Rate Type Configuration:
  
  Check the configuration settings for rate types in the system. Ensure that the rate types are correctly defined and active for the relevant time periods.
  
  
  
  Consult Documentation: 
  
  Review any relevant documentation or guidelines provided by SAP for setting up devices and rate types to ensure compliance with best practices.
  
  
  
  Testing: 
  
  After making changes, test the billing or consumption calculation again to ensure that the error is resolved.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as:
  
  EAM: Device management
  EL31: Display device
  EL02: Change device
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Roles: Ensure that the user has the necessary permissions to make changes to device master data.
  Documentation: Refer to SAP Help documentation for detailed instructions on managing devices and rate types.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP support team or a consultant who specializes in SAP IS-U for further assistance.