Message type: E = Error
Message class:  CNV10310 - Message class for development class CNV_10310 
Message number: 455
Message text: INTR_FLD=&: Overflow for internal counter assignment INDX (8-digig)
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 CNV10310455 indicates an overflow issue related to an internal counter assignment, specifically for the field INDX, which is an 8-digit field. This error typically occurs during data migration or conversion processes, particularly when using SAP's data migration tools or during the execution of certain programs that involve internal counters.
Cause: Counter Overflow: The error suggests that the internal counter (INDX) has exceeded its maximum value, which is 99999999 for an 8-digit field. This can happen if the process is trying to assign more than 100 million entries or if there are too many iterations in a loop that increments this counter. Data Volume: If you are processing a large volume of data, it is possible that the number of records being handled exceeds the limits of the internal counter.
Configuration Issues: Incorrect configuration settings in the migration or conversion process may lead to unexpected behavior, including counter overflows.
Solution: Check Data Volume:
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
CNV10310444 INTR_FLD=&1: No. of parameters=&2 is not considered during the analysis
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV10310435 Option: 'Analyze instances in the system' is switched on
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV10310456 Error! Entry in CNV_INTR_FLD_STP has length=0 !! (&)
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV10310457 Error! Differentiator without related structure information! (&)
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.