How To Fix L1038 - Key and data input not possible simultaneously

SAP Error Message - Details

• Message type: E = Error

• Message class: L1 - Message handling for WM master data

• Message number: 038

• Message text: Key and data input not possible simultaneously

What causes this issue?

Entering data in the key fields warehouse number/storage type and
storage bin as well as in other input fields at the same time is not
possible because the data of the key fields must be checked first.

How to fix this error?

First enter your data in the key fields and then make your entries in
in the input fields.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message L1038 - Key and data input not possible simultaneously ?

  The SAP error message L1038: Key and data input not possible simultaneously typically occurs in the context of inventory management or logistics when there is an attempt to enter both a key (like a material number or document number) and additional data in a single input field or screen. This can happen in various transactions, such as goods movements, inventory counts, or other logistics-related activities.
  Cause:
  The error is generally caused by:
  
  Input Field Restrictions: The system is designed to accept either a key input (like a material number) or additional data (like quantity or location) but not both at the same time. This is a design choice to prevent ambiguity in data entry.
  User Error: The user may have inadvertently entered data in multiple fields that are not meant to be used together.
  Configuration Issues: There may be specific configurations in the SAP system that enforce this restriction based on business processes.
  
  Solution:
  To resolve the error, you can take the following steps:
  
  Check Input Fields: Ensure that you are only entering data in the appropriate fields. If you are entering a key (like a material number), do not enter additional data in the same screen or field.
  Clear Unnecessary Fields: If you have filled in both a key and additional data, clear the fields so that only one type of input is present.
  Review Transaction Guidelines: Consult the documentation or guidelines for the specific transaction you are using to understand the expected input format.
  Consult with SAP Support: If the issue persists and you believe it is not due to user error, consider reaching out to your SAP support team or consulting SAP Notes for any known issues or patches related to this error.
  
  Related Information:
  
  Transaction Codes: This error can occur in various transaction codes related to inventory management, such as MIGO (Goods Movement), MI01 (Physical Inventory Document), etc.
  SAP Notes: Check SAP Notes for any updates or patches that might address this issue. You can search for the error message or related keywords in the SAP Support Portal.
  User Training: Ensure that users are trained on the correct procedures for data entry in SAP to minimize the occurrence of this error.
  
  By following these steps, you should be able to resolve the L1038 error and continue with your SAP transactions without further issues.