Message type: E = Error
Message class:  SEPM_DG - EPM: Data Generator Messages 
Message number: 039
Message text: EPM Data Generator: &1 Invalid or empty node name
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 SEPM_DG039, which states "EPM Data Generator: &1 Invalid or empty node name," typically occurs in the context of the SAP EPM (Enterprise Performance Management) Data Generator when there is an issue with the node name being used in the data generation process. Here’s a breakdown of the cause, potential solutions, and related information:
Cause: Invalid Node Name: The node name specified in the data generation configuration is either invalid or does not exist in the system. Empty Node Name: The node name field is left empty, which is not acceptable for the data generation process.
Configuration Issues: There may be issues with the configuration settings in the EPM Data Generator that lead to the generation of an invalid or empty node name. Data Source Issues: The data source from which the node name is being derived may not be correctly set up or may not contain the expected values. Solutions: Check Node Name:
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
SEPM_DG038 EPM Data Generator Started Date: &1 Time: &2
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
SEPM_DG037 EPM Data Generator: &1 Transactional Data records created
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
SEPM_DG040 EPM Data Generator: Data table is empty
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
SEPM_DG041 EPM Data Generator: Data does not match node type
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.