How To Fix CNV10310458 - Error! Structure field length 0 is not allowed! (&)

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 458

• Message text: Error! Structure field length 0 is not allowed! (&)

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 CNV10310458 - Error! Structure field length 0 is not allowed! (&) ?

  The SAP error message CNV10310458 with the description "Error! Structure field length 0 is not allowed!" 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 data structures.
  Cause:
  This error indicates that there is a field in a structure that has been defined with a length of zero. In SAP, fields must have a defined length to hold data. A length of zero is not valid, as it means that the field cannot store any data. This can happen due to:
  
  Incorrect Data Mapping: During data migration, if the mapping of fields from the source to the target structure is not done correctly, it may lead to fields being defined with a length of zero.
  Configuration Issues: If the structure definitions in the system are not set up correctly, it can lead to fields being defined with invalid lengths.
  Custom Development: If there are custom programs or enhancements that manipulate data structures, they may inadvertently set field lengths to zero.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check the Structure Definition:
  
  Go to the Data Dictionary (transaction SE11) and check the structure that is causing the error. Ensure that all fields have valid lengths defined.
  
  
  
  Review Data Mapping:
  
  If you are using a data migration tool (like SAP S/4HANA Migration Cockpit or LSMW), review the mapping of fields to ensure that all fields are correctly mapped and have appropriate lengths.
  
  
  
  Debugging:
  
  If the error occurs during the execution of a custom program, you may need to debug the program to identify where the field length is being set to zero. Look for any logic that might be incorrectly initializing or modifying the structure.
  
  
  
  Consult Documentation:
  
  Check SAP Notes or documentation related to the specific migration or conversion process you are using. There may be known issues or additional guidance available.
  
  
  
  Contact SAP Support:
  
  If you are unable to resolve the issue, consider reaching out to SAP Support for assistance. Provide them with the details of the error and the context in which it occurs.
  
  
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes that might address this specific error or provide guidance on data migration issues.
  Data Migration Tools: Familiarize yourself with the tools you are using for data migration, as they often have specific requirements and configurations.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.