Diagnosis
The OTB level may contain only one level of the merchandise categoryhierarchy:
basis merchandise category (0MATL_GROUP),
or merchandise category hierarchy level 1 (0RPA_WGH1),
or merchandise category hierarchy level 2 (0RPA_WGH2),
or merchandise category hierarchy level 3 (0RPA_WGH3),
or merchandise category hierarchy level 4 (0RPA_WGH4).