How To Fix EH401 - Enter either a logic number or an equipment number for the selection

SAP Error Message - Details

• Message type: E = Error

• Message class: EH - Messasge class for disconnection and reconnection

• Message number: 401

• Message text: Enter either a logic number or an equipment number for the selection

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message EH401 - Enter either a logic number or an equipment number for the selection ?

  The SAP error message EH401 ("Enter either a logic number or an equipment number for the selection") typically occurs in the context of the SAP Plant Maintenance (PM) or SAP Enterprise Asset Management (EAM) modules. This error indicates that the system requires either a logic number (which is often associated with functional locations) or an equipment number to proceed with the operation you are trying to perform.
  Cause:
  
  Missing Input: The user has not entered either a logic number or an equipment number in the selection screen.
  Incorrect Screen Navigation: The user may have navigated to a screen that requires specific input fields to be filled but has not done so.
  Configuration Issues: There may be configuration settings in the system that require certain fields to be filled out that are not being met.
  
  Solution:
  
  Enter Required Information: Ensure that you enter either a logic number or an equipment number in the relevant fields before executing the transaction.
  Check Input Fields: Review the input fields on the selection screen to ensure that you are not missing any required fields.
  Review Transaction Documentation: If you are unsure what to enter, refer to the documentation or help text associated with the transaction you are using.
  Consult with SAP Support: If you believe you are entering the correct information and still receive the error, it may be beneficial to consult with your SAP support team or check SAP Notes for any known issues related to this error.
  
  Related Information:
  
  Functional Locations: In SAP, functional locations are used to represent the physical locations of equipment or assets within a plant. A logic number is often associated with these locations.
  Equipment Master Data: Equipment numbers are unique identifiers for individual pieces of equipment in the SAP system. Ensure that the equipment you are trying to reference exists in the system.
  Transaction Codes: Familiarize yourself with the relevant transaction codes in SAP PM/EAM that may require these inputs, such as IW31 (Create Maintenance Order) or IL01 (Create Functional Location).
  
  If the problem persists after following these steps, it may be necessary to involve your SAP technical team to investigate further, as there could be underlying issues with the configuration or data integrity in the system.