How To Fix CNV_10020773 - &1 &2: Generation of a case structure not possible due to differ. lengths

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_10020 - Message class for package 10020

• Message number: 773

• Message text: &1 &2: Generation of a case structure not possible due to differ. lengths

What causes this issue?

For the generation of &V1& &V2&, a case structure is desired. This is
not possible because of different lengths in the source determination
object of the parent path (&V3&) and a sub path (&V4&).

System Response

The system automatically switches to the generation style "internal
table".

How to fix this error?

No user action is required.
&HINTS&
See the documentation of the <DS:DE.CNV_10020_GENER_STYLE>Generation
style</> for more information.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_10020773 - &1 &2: Generation of a case structure not possible due to differ. lengths ?

  The SAP error message CNV_10020773 typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that there is an issue with the generation of a case structure due to differing lengths of data fields.
  Cause:
  The error is caused by a mismatch in the lengths of the fields being processed. Specifically, it can occur when:
  
  The source data has fields that are longer or shorter than the corresponding target fields in the SAP system.
  There are inconsistencies in the data structure definitions between the source and target systems.
  The data types or formats of the fields do not match, leading to issues in how the data is interpreted.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Field Lengths: Review the field lengths in both the source and target systems. Ensure that the lengths match or that the target fields can accommodate the data from the source.
  
  
  Data Mapping: Verify the data mapping configuration in the migration tool. Ensure that the mappings are correctly defined and that the data types are compatible.
  
  
  Data Cleansing: If the source data contains values that exceed the target field lengths, consider cleansing the data. This may involve truncating values, converting data types, or modifying the data structure.
  
  
  Adjust Target Structure: If feasible, adjust the target structure to accommodate the source data. This may involve increasing the field lengths in the target system.
  
  
  Review Migration Settings: Check the settings and parameters used in the migration process. Ensure that they are correctly configured to handle the data being migrated.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to the specific migration tool you are using. There may be specific guidelines or known issues related to this error.
  
  
  Testing: After making adjustments, perform a test migration with a smaller dataset to ensure that the changes resolve the issue before proceeding with the full migration.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or solutions for this specific error.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit or the specific tool you are using for data migration.
  Community Forums: Consider searching or posting in SAP community forums or discussion groups, as other users may have encountered and resolved similar issues.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to successfully complete the data migration process.