Message type: E = Error
Message class:  CNVHCM_PRESEL - TDMS4HCM: Messages for Object Selection 
Message number: 308
Message text: Evaluation of PD tree with path &1 and object &2 started on &3 at &4
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 CNVHCM_PRESEL308 typically relates to issues encountered during the evaluation of the Personnel Development (PD) tree in the SAP system. This message indicates that there was an attempt to evaluate a PD tree with a specific path and object, but it may have encountered issues that prevented it from completing successfully.
Cause: The error can be caused by several factors, including but not limited to: Incorrect Path or Object: The specified path (&1) or object (&2) may not exist or may be incorrectly defined in the system. Data Inconsistencies: There may be inconsistencies or missing data in the underlying tables that the PD tree relies on. Authorization Issues: The user executing the evaluation may not have the necessary authorizations to access the specified path or object. System Performance: If the system is under heavy load or if there are performance issues, the evaluation may time out or fail.
Configuration Issues: There may be configuration
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
CNVHCM_PRESEL307 No authorization to read payroll cluster; contact administrator
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNVHCM_PRESEL306 No authorization to read time cluster; contact administrator
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNVHCM_PRESEL309 Evaluation of PD tree(s) ended on &1 at &2
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNVHCM_PRESEL310 Evaluation of PD relationships started on &1 at &2
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.