Quantities in 0FI_GL_14

Hello,

We are migrating our BW reports from GL_4 to GL_14.

We have created a cube over 0FIGL_O14 DSO.

In GL_14, we have DOCLN(length 6) as opposed to BUZEI(length 3) in GL_4. This is for incorporating the New GL document splitting functionality.

We are currently using quantities from FI_GL_4 in our BW reports and this is an important field in these reports.

In GL_14 this field is not always populating, so we want to have a look up on BSEG for all the missing items.

Here is my question. Since we can have multiple items in FLEXA table for each item in BSEG, will this be a problem if we just do the lookup on BSEG based on the line item in BSEG.

Or

Is there any other place I can look for quantity for the line items in FLEXA?

Any help is appreciated.