Message type: E = Error
Message class:  CNV_DMC_SIN - Messages for s-innovations migration 
Message number: 148
Message text: Unit of volume is initial, please fill in the Unit for the Volume
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_DMC_SIN148 indicates that a unit of volume has not been specified in a certain context, which is likely related to data migration or conversion processes. This error typically arises during the use of the SAP Data Migration Cockpit or similar tools when handling data that involves volume measurements.
Cause: The error occurs when: A required field for the unit of volume is left empty or is not filled in during data entry or migration. The system expects a specific unit of measurement (like liters, gallons, cubic meters, etc.) to be provided for volume-related data, but it has not been specified.
Solution: To resolve this error, you can take the following steps: Identify the Data Entry Point: Determine where the volume data is being entered or migrated. This could be in a migration template, a data upload file, or a specific transaction. Fill in the Unit of Volume: Go to the relevant data entry screen
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
CNV_DMC_SIN147 Unit of weight is initial, please fill in the unit for the Gross Weight
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_DMC_SIN146 Unit of weight is initial, please fill in the unit for the Net Weight
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_DMC_SIN149 Unit of Measure &1 already exists as Base Unit of Measure
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_DMC_SIN150 PO not transferred, because of item deletion flag &1, &2 &3
What causes this issue?  Only purchase orders that are open completely will be migrated.System Response  The following reasons can result in a rejecti...
Click on this link to search all SAP messages.