Message type: E = Error
Message class:  5M - Error Messages for Denmark 
Message number: 442
Message text: Start date invalid. Job could not be closed
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 5M442, which states "Start date invalid. Job could not be closed," typically occurs in the context of job scheduling and processing within the SAP system. This error indicates that there is an issue with the start date of a job that is preventing it from being closed or processed correctly. Causes: Invalid Date Format: The start date may not be in the correct format or may not conform to the expected date range. Past Date: The start date might be set to a date in the past, which can cause issues if the job is expected to run in the future. System Date Mismatch: There may be a mismatch between the system date and the date set for the job. Job
Configuration Issues: There could be configuration issues in the job scheduling settings that lead to invalid date entries. Time Zone Issues: If the job is scheduled across different time zones, it
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
5M441 The job cannot be started directly
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
5M437 OSI transfer chosen, but no PBS number entered
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
5M443 Job could not be closed
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
5M444 No steps have been included in the job
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
Click on this link to search all SAP messages.