Area-specific member mappings control how Essbase maps members at a more granular level than global mappings. If you can map all of the members in the source database to their counterparts in the target database using standard member mapping, then you do not need to perform advanced area-specific mapping.
To define area-specific member mappings:
Select Areas.
Select a row.
Click Advanced to open the Area-Specific Member Mapping dialog box.
Select an editing option and then double-click in the Source or Target column.
Using the editing tool you selected, specify members for the area-specific member mappings.
If the area definition requires mapping, select the Mappings tab to continue defining the partition.
If the area definition does not require mapping, validate and save the partition.
“Creating Advanced Area-Specific Mappings” in the Oracle Essbase Database Administrator's Guide
create partition (MaxL) in the Oracle Essbase Technical Reference
display partition (MaxL) in the Oracle Essbase Technical Reference