SAP Message 1W056 - Data element &1 is assigned to more than one object type

Diagnosis
The given data element was assigned to more than one object. Thisresults in problems because it is not possible to generate a link atruntime.

Procedure
Make sure that the data element is assigned to only one object. If youwant to use the same data element for multiple objects, you can use theDrag&Relate supertype. You can then assign allobjects that are part of the supertype.