TR0919
Measure measure_name is an allocated measure in dimension dimension_name. Cube group cube_group_name is based on this dimension. This measure will not appear in the PowerCube (.mdc file) unless an external detail level is specified for the cube group.
An allocated measure was used in a PowerCube (.mdc file) that is part of a cube group, but the cube group was not defined with an external level of detail.
Procedure
Specify an external level of detail, to ensure that measure
values required to perform the allocation are available in the PowerCube.