How To Fix C1064 - Data redundancy only allowed with link to a table field

SAP Error Message - Details

• Message type: E = Error

• Message class: C1 - Characteristics maintenance messages

• Message number: 064

• Message text: Data redundancy only allowed with link to a table field

What causes this issue?

You have selected the <LS>Data redundancy</> field. This means that
the contents of a table field are also stored in the classification
system. However, the characteristic is not linked to a table field, so
this functionality is not supported.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Either deselect the field, or set up a link to a table field by
entering a table name and a field name from this table.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message C1064 - Data redundancy only allowed with link to a table field ?

  The SAP error message C1064, which states "Data redundancy only allowed with link to a table field," typically occurs in the context of data modeling or when working with database tables in SAP. This error indicates that there is an attempt to create a redundant data entry without a proper link to a corresponding table field, which is not allowed in the SAP data model.
  Cause:
  
  Redundant Data Entry: The error arises when you try to create a redundant entry in a table without establishing a proper relationship or link to the primary key or a relevant field in another table.
  Data Model Violation: It may also occur if the data model rules are violated, such as trying to create a field that is not properly defined or linked to an existing table structure.
  Incorrect Configuration: Misconfiguration in the data dictionary or in the table definitions can lead to this error.
  
  Solution:
  
  Check Table Relationships: Ensure that any redundant data you are trying to enter has a proper link to the relevant table field. This may involve defining foreign keys or ensuring that the data model adheres to normalization principles.
  Review Data Dictionary: Go to the Data Dictionary (transaction SE11) and check the definitions of the tables involved. Make sure that the fields are correctly defined and that any necessary relationships are established.
  Adjust Data Model: If you are working with custom tables or fields, consider adjusting the data model to ensure that redundancy is handled correctly. This may involve creating additional fields or modifying existing ones to establish the necessary links.
  Consult Documentation: Review SAP documentation or guidelines related to data modeling and table definitions to ensure compliance with best practices.
  Debugging: If you are a developer, you may want to debug the program or transaction that is causing the error to identify the exact point of failure and the data being processed.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions to common problems.
  Data Modeling Best Practices: Familiarize yourself with best practices in data modeling within SAP, including normalization, relationships, and data integrity rules.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  If the problem persists after following these steps, it may be beneficial to consult with an SAP expert or your organization's SAP support team for further assistance.