Message type: E = Error
Message class:  PRC_CNV - Messages for Conversion Engine 
Message number: 139
Message text: A field overflow has occurred
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 PRC_CNV139, which indicates that "A field overflow has occurred," typically arises when data being processed exceeds the defined limits of a field in the database or application. This can happen in various contexts, such as during data migration, data entry, or processing large datasets. Causes: Data Type Mismatch: The data being inputted or processed may not match the expected data type or size. For example, trying to insert a number that exceeds the maximum limit of an integer field. Incorrect Configuration: Configuration settings in the system may not align with the data being processed, leading to overflow. Data Migration Issues: During data migration, if the source data contains values that exceed the target field limits, this error can occur. Custom Code: If there are custom programs or enhancements, they may not handle data correctly, leading to overflow situations. Solutions: Check Data Values: Review the data being processed to ensure that it does not
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
PRC_CNV138 Fraction &1 outside allowed range (lower then 1E-6 or higher then 100000)
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
PRC_CNV137 The  unit counter or denominator &1 is 0
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
PRC_CNV140 The dimension &1 of the physical unit &2 is not available
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
PRC_CNV141 The unit of measurement &1 is not assigned to material master record &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.