How To Fix EL194 - MR cat. is not unique: Installation &1 and &2 allocated to same device

SAP Error Message - Details

• Message type: E = Error

• Message class: EL - IS-U meter reading data processing

• Message number: 194

• Message text: MR cat. is not unique: Installation &1 and &2 allocated to same device

What causes this issue?

In move-in/out processing, the meter reading category specifies whether
the meter reading is to be carried out by the customer or the utility
company. This parameter is maintained for each installation. If several
installations are allocated to a device, all meter reading categories
must be identical.

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?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message EL194 - MR cat. is not unique: Installation &1 and &2 allocated to same device ?

  The SAP error message EL194 indicates that there is a conflict in the allocation of materials to a device. Specifically, it states that the material categories (MR cat.) are not unique because two installations (or materials) are allocated to the same device. This can occur in scenarios where multiple materials or installations are trying to use the same device, leading to ambiguity in the system.
  Cause:
  
  Duplicate Allocations: Two or more installations or materials are assigned to the same device, which violates the uniqueness requirement for material categories.
  Configuration Issues: Incorrect configuration in the device or material master data can lead to this error.
  Data Entry Errors: Manual errors during data entry can result in the same material being assigned to multiple installations.
  
  Solution:
  
  Check Allocations: Review the allocations of materials to devices. Identify the installations that are causing the conflict and determine if both need to be allocated to the same device.
  Modify Allocations: If one of the installations does not need to be allocated to the device, remove it from the allocation. This can be done through the relevant transaction codes (e.g., IL02 for changing installation).
  Review Material Master Data: Ensure that the material master data is correctly configured and does not have conflicting entries.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on managing device allocations and resolving conflicts.
  Use Transaction Codes: Utilize transaction codes like IE02 (Change Equipment) or IE03 (Display Equipment) to check the equipment and its allocations.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as IE01, IE02, IL01, IL02, and IL03 for managing installations and devices.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Roles: Ensure that you have the necessary authorizations to make changes to installations and device allocations.
  Testing: After making changes, test the system to ensure that the error is resolved and that the allocations are functioning as expected.
  
  By following these steps, you should be able to resolve the EL194 error and ensure that your material allocations are unique and correctly configured.