How To Fix CNV10310258 - &1 : Field &2 is too long! ( &3 > &4 )

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV10310 - Message class for development class CNV_10310

• Message number: 258

• Message text: &1 : Field &2 is too long! ( &3 > &4 )

Self-Explanatory Message

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.

What else can you do?

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.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV10310258 - &1 : Field &2 is too long! ( &3 > &4 ) ?

  The SAP error message CNV10310258 indicates that a specific field in your data is exceeding the maximum allowed length. The message format suggests that it is related to a data conversion or migration process, where the length of a field in the source data exceeds the defined limit in the target system.
  Cause:
  
  The error occurs when the data being processed has a field (denoted as &2) that is longer than the maximum length allowed (denoted as &4). The actual length of the data being processed is indicated by &3.
  This situation often arises during data migration, data uploads, or conversions where the source system's field definitions differ from those in the target system.
  
  Solution:
  
  
  Identify the Field: Check the error message for the specific field name (represented by &2) that is causing the issue. This will help you locate the problematic data.
  
  
  Check Field Lengths: Review the field definitions in both the source and target systems to understand the maximum allowed lengths. You can find this information in the data dictionary (SE11) or by checking the relevant table structures.
  
  
  Data Truncation: If the data in the source system is longer than the target system allows, you may need to truncate the data to fit the target field length. This can be done by:
  
  Modifying the source data before migration.
  Using transformation rules in the migration tool to truncate the data automatically.
  
  
  
  Adjust Target Field Length: If it is acceptable for your business process, consider increasing the length of the target field in the SAP system to accommodate the longer data. This requires careful consideration and should be done in accordance with your organization's data governance policies.
  
  
  Data Validation: Implement validation checks in your data migration process to catch such issues before they cause errors. This can include checks for field lengths and data formats.
  
  
  Testing: After making adjustments, perform thorough testing to ensure that the data migration or upload process works without errors.
  
  
  Related Information:
  
  Transaction Codes: You may want to use transaction codes like SE11 (Data Dictionary), SE16 (Data Browser), or ST22 (Dump Analysis) to investigate further.
  SAP Notes: Check SAP Notes for any known issues or patches related to data migration or specific field length limitations.
  Documentation: Review the documentation for the data migration tool you are using (e.g., SAP S/4HANA Migration Cockpit, LSMW) for best practices and guidelines on handling field length issues.
  
  By following these steps, you should be able to resolve the CNV10310258 error and successfully complete your data migration or upload process.