SAP Message DT064 - Structure change at field level (convert table &)

Diagnosis
The structure of the table changed at field level. This change requiresa conversion of the table. This situation can occur for example if thedata type or field length of the domain upon which the field is basedwas changed. A conversion is also generally necessary if the key of thetable changed.

Procedure
Convert the table using the Database Utility (SE14).