Message type: E = Error
Message class:  UASBW - Messages for BW Connection Generation 
Message number: 004
Message text: Generation failed
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 UASBW004, which indicates "Generation failed," typically occurs in the context of SAP Business Workflow or related areas where there is an issue with generating a workflow or a related object. Here are some common causes, solutions, and related information for this error: Causes: Missing or Incomplete Data: The workflow may be trying to access data that is missing or incomplete, leading to a failure in generation.
Configuration Issues: Incorrect configuration settings in the workflow or related components can lead to this error. Authorization Issues: The user executing the workflow may not have the necessary authorizations to perform the actions required for generation. System Errors: There may be underlying system issues, such as database problems or inconsistencies in the workflow definitions. Transport Issues: If the workflow was transported from one system to another, there may be inconsistencies or missing objects in the target system. Solutions: Check Workflow Definitions: Review the workflow definitions and ensure that
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
UASBW003 DataSource &1 was successfully generated
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
UASBW002 DataSource &1 will not be generated
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
UASBW005 DataSource name for master data was not yet defined
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
UASBW006 DataSource name for texts was not yet defined
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.