How To Fix ESH_OM_OBJ_MODEL_RP2856 - The scale has no uom but attribute &1 is of dimension &2 with si-unit &3

SAP Error Message - Details

• Message type: E = Error

• Message class: ESH_OM_OBJ_MODEL_RP2 - Object Model Repository (2)

• Message number: 856

• Message text: The scale has no uom but attribute &1 is of dimension &2 with si-unit &3

What causes this issue?

A ranking factor attribute can have a dimension and a scale can have a
unit of measure (uom) which itself has a dimension.
The attribute &v1& is assigned to the scale but the following condition
is not fulfilled:
As the scale has no unit of measure the attribute may not have dimension
&v3& which has a SI-unit of measure.

System Response

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

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message ESH_OM_OBJ_MODEL_RP2856 - The scale has no uom but attribute &1 is of dimension &2 with si-unit &3 ?

  The SAP error message ESH_OM_OBJ_MODEL_RP2856 indicates that there is an issue with a scale in the system that lacks a unit of measure (UOM), while an attribute associated with it has a specific dimension and a corresponding SI unit. This error typically arises in the context of SAP's Enterprise Search or Object Model, where data attributes are expected to have defined units of measure for proper processing and representation.
  Cause:
  
  Missing Unit of Measure (UOM): The scale defined in the system does not have an associated unit of measure, which is necessary for interpreting the data correctly.
  Dimension Mismatch: The attribute in question has a defined dimension (e.g., length, weight, volume) but lacks a corresponding UOM, leading to confusion in data processing.
  Configuration Issues: There may be configuration issues in the data model or the way attributes are defined in the system.
  
  Solution:
  
  
  Define a Unit of Measure:
  
  Go to the relevant configuration settings in SAP and ensure that the scale has an appropriate unit of measure defined.
  You can do this by navigating to the relevant transaction codes (like CUNI for unit of measure maintenance) and checking the settings for the scale in question.
  
  
  
  Check Attribute Configuration:
  
  Review the configuration of the attribute that is causing the error. Ensure that it is correctly defined with a UOM that matches its dimension.
  If necessary, modify the attribute settings to include a valid UOM.
  
  
  
  Data Model Review:
  
  If the error persists, review the data model to ensure that all attributes and scales are correctly defined and linked.
  Check for any inconsistencies or missing configurations that could lead to this error.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific guidance on handling unit of measure issues in your version of SAP.
  
  
  
  Testing:
  
  After making the necessary changes, test the system to ensure that the error is resolved and that the data is being processed correctly.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  Community Forums: Engage with SAP community forums or support channels where similar issues may have been discussed.
  Version Specifics: Be aware that the resolution steps may vary slightly depending on the version of SAP you are using, so ensure that you are following the guidelines relevant to your system.
  
  By addressing the missing unit of measure and ensuring that all attributes are correctly configured, you should be able to resolve the error ESH_OM_OBJ_MODEL_RP2856.