Field help (ICCE) 

An Analytical dimension is a part of the analytical general ledger accounts. It is divided into Analytical dimension types where each dimension type constitutes a particular breakdown of the company into a set of analytical payment attributes.
The setup of the folder permits the definition of 1 to 9 dimension types.
An analytical dimension is thus an analytical payment attribute within a dimension type. The dimensions of a dimension type represent the Analytical plan of the dimension type.
This field is used to enter the analytical dimension to which the current recording is allocated.

The entry of analytical dimensions can be set to mandatory using the setup carried out at the level of the Company (Accounting tab).
In creation mode, allocations can be initialized with respect to the setup of Default dimensions (FXDASSETS code for assets and expenses, FXDGRANTS for subsidies and FXDLEASE for lease contracts).