How To Fix IW155 - No scheduling type maintained

SAP Error Message - Details

• Message type: E = Error

• Message class: IW - Order Processing

• Message number: 155

• Message text: No scheduling type maintained

What causes this issue?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

The system could not define a scheduling type.

How to fix this error?

Maintain the scheduling types in your system using the Customizing
function:

<DS:TRAN.OIOT>Proceed</>
ENDIF
INCLUDE 'DARF-NICHT' OBJECT DOKU ID TX LANGUAGE E

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message IW155 - No scheduling type maintained ?

  The SAP error message IW155 "No scheduling type maintained" typically occurs in the context of maintenance planning and scheduling within the SAP system, particularly when working with maintenance orders or work orders. This error indicates that the system cannot find a scheduling type for the operation or task you are trying to process.
  Cause:
  The error can be caused by several factors, including:
  
  Missing Scheduling Type: The scheduling type has not been defined for the operation in the maintenance order or task list.
  Incorrect Configuration: The configuration settings for the maintenance planning or scheduling may not be set up correctly.
  Master Data Issues: The relevant master data (such as work center or task list) may not have the necessary scheduling information maintained.
  Order Type Settings: The order type being used may not have the scheduling type defined in its configuration.
  
  Solution:
  To resolve the IW155 error, you can take the following steps:
  
  
  Check the Maintenance Order:
  
  Go to the maintenance order in question and check the operations. Ensure that a scheduling type is maintained for each operation.
  
  
  
  Maintain Scheduling Type:
  
  If the scheduling type is missing, you can maintain it by:
  
  Navigating to the operation details in the maintenance order.
  Entering a valid scheduling type in the appropriate field.
  
  
  
  
  
  Review Work Center Settings:
  
  Check the work center associated with the operation. Ensure that the work center has the necessary scheduling parameters defined.
  
  
  
  Check Task List:
  
  If you are using a task list, ensure that the task list has the scheduling type maintained for the operations.
  
  
  
  Configuration Settings:
  
  Review the configuration settings for the order type in the SAP IMG (Implementation Guide). Ensure that the scheduling type is defined for the relevant order type.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific details on how to maintain scheduling types and related settings.
  
  
  
  Contact Support:
  
  If the issue persists after checking the above points, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like IW31 (Create Order), IW32 (Change Order), or IW33 (Display Order) to access maintenance orders.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance.
  Training and Documentation: Ensure that users involved in maintenance planning are trained on the importance of scheduling types and how to maintain them in the system.
  
  By following these steps, you should be able to identify and resolve the cause of the IW155 error in your SAP system.