Within data load and dimension build rules files, Essbase can operate on one record as one unit. During data loads and dimension builds, rules files tell Essbase how to process the information contained in each record.
Operations that you can perform at the record level:
Select the records not to load into the database, that is, reject records.
Set header records in the data source to describe the contents of the data source and point to those records in the rules file.
Set header records in the rules file that describe the contents of the data source.