How To Fix IUID026 - UII or equipment number is missing

SAP Error Message - Details

• Message type: E = Error

• Message class: IUID - Messages Class for Unique Item Identification

• Message number: 026

• Message text: UII or equipment number is missing

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message IUID026 - UII or equipment number is missing ?

  The SAP error message IUID026 indicates that a Unique Item Identifier (UII) or equipment number is missing in the context of managing serialized or tracked items in SAP. This error typically arises when trying to perform operations that require a unique identifier for an item, such as creating or updating records in the system.
  Cause:
  
  Missing Data: The most common cause is that the UII or equipment number has not been entered in the relevant fields when creating or updating a document (e.g., a delivery, equipment master record, etc.).
  Configuration Issues: There may be configuration settings in the system that require a UII or equipment number for certain transactions, and these settings may not be properly aligned with the data being processed.
  Data Entry Errors: Users may inadvertently skip entering the required fields or may not have the necessary permissions to view or enter this data.
  Integration Issues: If the data is being pulled from another system or module, there may be issues with data transfer or mapping.
  
  Solution:
  
  Check Input Fields: Ensure that the UII or equipment number is correctly entered in the relevant fields. If you are creating a new record, make sure to fill in all mandatory fields.
  Review Configuration: Check the configuration settings in SAP related to the specific module you are working with (e.g., Plant Maintenance, Inventory Management). Ensure that the settings align with your business processes and that the UII or equipment number is required only when necessary.
  Data Validation: Implement validation checks to ensure that users are prompted to enter the UII or equipment number before proceeding with transactions that require it.
  User Training: Provide training to users on the importance of entering UII or equipment numbers and how to do so correctly.
  Debugging: If the issue persists, consider debugging the transaction to identify where the data is being lost or not captured. This may involve checking user exits, BAPIs, or other custom code that interacts with the data.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes that may be involved in the process, such as IW31 (Create PM Order), MIGO (Goods Movement), or IE01 (Create Equipment).
  SAP Notes: Check SAP Notes for any known issues or patches related to the error message IUID026. SAP frequently updates its knowledge base with solutions for common problems.
  Documentation: Review SAP documentation related to equipment management and unique item identifiers to understand the requirements and best practices for managing these identifiers.
  
  By addressing the root cause of the error and ensuring that all necessary data is provided, you can resolve the IUID026 error and continue with your SAP transactions smoothly.