Do you have any question about this error?
Message type: E = Error
Message class: IW - Order Processing
Message number: 428
Message text: No scheduling: Please enter start and end dates
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.
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.
The SAP error message IW428 ("No scheduling: Please enter start and end dates") typically occurs in the context of work order management or maintenance planning within the SAP system. This error indicates that the system cannot schedule a work order or maintenance task because the required start and end dates have not been provided.
Cause:
- Missing Dates: The most common cause is that the user has not entered the start and end dates for the work order or maintenance task.
- Incorrect Date Format: The dates may be entered in an incorrect format that the system does not recognize.
- System Configuration: There may be configuration settings in the SAP system that require certain fields to be filled out before scheduling can occur.
- User Authorization: The user may not have the necessary permissions to enter or modify the scheduling dates.
Solution:
- Enter Dates: Ensure that both the start and end dates are entered in the appropriate fields. These fields are usually found in the work order or maintenance task creation or modification screens.
- Check Date Format: Verify that the dates are entered in the correct format as per your system's regional settings (e.g., DD/MM/YYYY or MM/DD/YYYY).
- Review Configuration: If you have access, check the configuration settings related to work order scheduling to ensure that all required fields are set up correctly.
- User Permissions: Confirm that you have the necessary permissions to enter scheduling information. If not, contact your SAP administrator to request the appropriate access.
- Consult Documentation: Refer to SAP documentation or help resources for specific guidance on scheduling work orders in your version of SAP.
Related Information:
By addressing the missing or incorrectly formatted dates, you should be able to resolve the IW428 error and proceed with scheduling your work orders or maintenance tasks.
Get instant SAP help. Start your 7-day free trial now.
Feature | Free Access | Free Trial |
---|---|---|
Basic SAP error explanation | ![]() |
![]() |
Step-by-Step Usage Guide | ![]() |
![]() |
Interactive SAP Coach Assistance | ![]() |
![]() |
AI Troubleshooting for T-Code Errors | ![]() |
![]() |
IW427 Backward scheduling: Please enter end date
Self-Explanatory Message Since SAP believes that this specific error message is ...
IW426 Forward scheduling: Please enter start date
Self-Explanatory Message Since SAP believes that this specific error message is ...
IW429 Current date scheduling: Start is set to current date
Self-Explanatory Message Since SAP believes that this specific error message is ...
IW430 Start date may not fall after end date
Self-Explanatory Message Since SAP believes that this specific error message is ...
SAP messages fall into 3 different categories: Error messages
(message type = E), Warnings (W) or Informational (I) messages.
An error message will prevent you from continuing your work - it is a hard stop and you need to fix the error before you can proceed. A warning message will stop your work, however, you can then bypass the warning by pressing the Enter key on your keyboard. That said, it is still good practice to investigate the cause of the warning message and address it. An information message will not stop your work and is truly just for informational purposes.
Click on this link to search all SAP messages.