SAP Message R7284 - InfoObject &1 is referenced - cannot change data type to DATS or TIMS

Diagnosis
InfoObject &V1& is still referenced by other InfoObjects.

System Response
The data type of InfoObject &V1& cannot be changed to date (DATS) ortime (TIMS). InfoObject &V1& would, in this case, refer to InfoObject0DATE or 0TIME and could no longer be referenced by other InfoObjectsitself.

Procedure
First delete the InfoObjects that refer to InfoObject &V1&. You can geta list of them using the 'Where-used list'.