Message type: E = Error
Message class:  SAWE_BO_SA_TIME_PS - Message Class : Staff Assignment Time Planning Sheet 
Message number: 052
Message text: Automatic forecast not possible; object &1 &2 is not forecast relevant
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 SAWE_BO_SA_TIME_PS052 indicates that the automatic forecast cannot be executed for a specific object because it is not considered forecast-relevant. This typically occurs in the context of SAP's Advanced Planning and Optimization (APO) or similar modules where forecasting is a key function.
Cause: Non-Forecast Relevant Object: The object (e.g., product, location, or other master data) specified in the error message is not marked as forecast-relevant in the system. This could be due to configuration settings or master data settings. Data Configuration: The configuration for the forecasting process may not include the specific object type or it may not be set up correctly. Master Data Issues: The master data for the object may be incomplete or incorrectly maintained, leading to it being excluded from the forecasting process.
Solution: Check Object Settings: Navigate to the relevant master data (e.g., product master) and verify if the object is marked as forecast-relevant. This can usually be found in
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
SAWE_BO_SA_TIME_PS051 Mandatory automatic forecast parameters not complete for assignment &1
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
SAWE_BO_SA_TIME_PS050 Assignment validity starts on &1; start sate &2 cannot be less than &1
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
SAWE_BO_SA_TIME_PS053 For Assignment &1 &2 with &3, &4 days forecasted in spread forecast mode
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
SAWE_BO_SA_TIME_PS054 For Assignment &1 &2 with &3, &4 hours forecasted in spread forecast mode
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.