Message Oracle ORA-36993 - (XSRELGID10) OBJECT workspace object must be a VARIABLE, RELATION, or a numeric SURROGATE DIMENSION based on the level dimension workspace object.

ERROR	(XSRELGID10) OBJECT workspace object must be a VARIABLE, RELATION, or a numeric SURROGATE DIMENSION based on the level dimension workspace object.
CAUSE	not a surrogate dimension, or the surrogate dimension is not based on the level dimension.
ACTION	modify/change the surrogate dimension.