SAP Message C1064 - Data redundancy only allowed with link to a table field

Diagnosis
You have selected the Data redundancy field. This means thatthe contents of a table field are also stored in the classificationsystem. However, the characteristic is not linked to a table field, sothis functionality is not supported.

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