Message type: E = Error
Message class:  CNV_00001 - Message class for CWB settings maintenance programs 
Message number: 345
Message text: Database commit every &1 bytes
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 CNV_00001345 indicates that there is a problem related to database commit sizes during data migration or conversion processes. This error typically arises in the context of SAP's data migration tools, such as the SAP S/4HANA Migration Cockpit or other data conversion scenarios.
Cause: The error message CNV_00001345 Database commit every &1 bytes suggests that the system is trying to commit data to the database in chunks that exceed the allowed size. This can happen due to various reasons, including: Large Data Volume: The amount of data being processed in a single transaction exceeds the database's commit size limit. Database Configuration: The database settings may not be optimized for handling large transactions. Memory Limitations: Insufficient memory allocation for the database or application server can lead to this issue. Data Migration Settings: Incorrect settings in the data migration tool that define the commit size.
Solution: To resolve the error, you can consider the following steps: Adjust Commit
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
CNV_00001344 Size of a cluster block: &1 bytes
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_00001343 Number of work processes running in parallel: &1
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_00001346 Number of parallel update jobs for a table: &1
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_00001347 Max. number of running tasks for a table: &1
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.