Oracle Error Message
ORA-34286: (MXDCL53) workspace object cannot be used in this context because it is a string.
Reason for the Error
User specified a dimension composite, conjoint, or partition template in a place where that kind of dimension is not allowed. For instance, a relation cannot be dimensioned by a composite, and only a variable can dimensioned by a partition template.
Solution
Usually, the offending dimension can be replaced with its bases. For instance, a relation cannot be dimensioned by a a composite of PRODUCT and GEOG, but it can be dimensioned by both PRODUCT and GEOG instead.