How To Fix M2312 - Warning: Unit & requires special characteristics

SAP Error Message - Details

• Message type: E = Error

• Message class: M2 - LIS: Generating and updating info structures

• Message number: 312

• Message text: Warning: Unit & requires special characteristics

What causes this issue?

Unit &V1& refers to organizational fields. The characteristics in your
information structure do not include any of these fields.
<ZH>Example</>
Unit 30 (local currency) refers to the company code. To prevent values
in different currencies from being added together, you need to add a
field to the information structure's characteristics which clearly
indicates the company code. The same applies to unit 01 (base unit of
measure): the material must be a characteristic in the information
structure.

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?

You can ignore this warning if you can be sure that the same unit is
always used in updating. In the above example, this could be the case
if you have only created one company code and thus one local currency
in your system.
If you cannot rule out the possibility of these problems occurring,
change the characteristics in your information structure as follows:
Add the field &V2& (&V3&) as a characteristic in your information
structure, or choose a characteristic with a domain that is proposed in
view V_TMC6P_D for unit &V1&. Characteristics in this view are
identified via their domain.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message M2312 - Warning: Unit & requires special characteristics ?

  The SAP error message M2312, which states "Warning: Unit & requires special characteristics," typically occurs in the context of materials management and inventory management within SAP. This warning indicates that the material you are trying to process has been defined with special characteristics that need to be considered for the transaction you are attempting to perform.
  Cause:
  
  Special Characteristics Defined: The material in question has been defined with specific characteristics (like color, size, etc.) that are required for certain operations (e.g., production, sales, or inventory management).
  Missing Data: The required special characteristics may not have been provided in the transaction you are attempting to execute.
  Configuration Issues: There may be configuration settings in the material master that enforce the need for these characteristics.
  
  Solution:
  
  Check Material Master: Go to the material master record (transaction code MM03) and check the "Basic Data" and "Classification" views to see what special characteristics are defined for the material.
  Provide Required Characteristics: When performing the transaction (e.g., creating a purchase order, production order, etc.), ensure that you provide the necessary special characteristics for the material.
  Review Configuration: If you believe the characteristics should not be mandatory, review the configuration settings in the material master or consult with your SAP configuration team to adjust the settings as needed.
  Consult Documentation: Refer to SAP documentation or help files for more details on how to handle materials with special characteristics.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MM01 (Create Material), MM02 (Change Material), and MM03 (Display Material) to manage material master data.
  Classification System: Understand how the classification system works in SAP, as it is often used to manage special characteristics.
  User Exits and BAdIs: If you are a developer or have access to technical resources, consider checking for user exits or BAdIs that might be influencing the behavior of materials with special characteristics.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP support team or a functional consultant who specializes in materials management.