Rigid relationships between attributes cannot be changed during incremental processing of a dimension. The error occurred ...

Rigid relationships between attributes cannot be changed during incremental processing of a dimension. The error occurred when processing attribute '%{Attribute/}'. %1[Table: '%{Table/}', Column: '%{Column/}', Value: '%{Value/}'%]%[; Table: '%{Table/}', Column: '%{Column/}', Value: '%{Value/}'%]. Source attribute: '%{SourceAttribute/}'. Key column value(s) of the source attribute: %1['%{KeyColumnValue/}'%]%[, '%{KeyColumnValue/}'%].