Message type: E = Error
Message class:  /SAPAPO/OM_PVC_APS -  
Message number: 404
Message text:
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 /SAPAPO/OM_PVC_APS404 typically relates to issues in the Advanced Planning and Optimization (APO) module, particularly in the context of Production Planning and Detailed Scheduling (PP/DS). This error message usually indicates that there is a problem with the planning process, often related to the configuration of the planning object or the data being processed.
Cause: The specific cause of the error can vary, but common reasons include: Missing Master Data: Required master data such as resources, production versions, or material master records may be missing or incorrectly configured. Incorrect Planning Parameters: The planning parameters set for the product or resource may not be appropriate for the current planning scenario. Data Inconsistencies: There may be inconsistencies in the data being used for planning, such as incorrect or incomplete data in the planning books or data views. Capacity Constraints: There may be capacity constraints that prevent the system from scheduling the production orders as planned.
Solution: To resolve
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
/SAPAPO/OM_PVC_APS403 
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
/SAPAPO/OM_PVC_APS402 
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
/SAPAPO/OM_PVC_APS405 
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
/SAPAPO/OM_PVC_APS406 
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.