Message type: E = Error
Message class:  HRTIM00WS - HR Messages: Work Schedules 
Message number: 039
Message text: Enter an end time
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 HRTIM00WS039 typically occurs in the context of time management or time recording in SAP, particularly when dealing with time entries for employees. The error message indicates that an end time has not been entered for a time record, which is required for the system to process the time data correctly.
Cause: The primary cause of this error is that when you are trying to enter a time record (such as a work schedule, attendance, or absence), the end time field is left blank. The system requires both a start time and an end time to calculate the duration of the time entry.
Solution: To resolve this error, you should: Check the Time Entry Form: Ensure that you are filling out all required fields in the time entry form. Specifically, look for the end time field and make sure it is populated. Enter Valid End Time: If you are entering a time record
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
HRTIM00WS038 Enter a start time
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
HRTIM00WS037 Select at least one weekday
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
HRTIM00WS040 Select exactly one work schedule rule
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
HRTIM00_DV_TRANSFORM001 Internal errors &1 &2 &3
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.