SQVI - Number of Records as output is less than that available in Std. Tables

Hi Gurus,

Requirement is to pass STUFE=5 > BUKR=XXXX in PRPS and get superior WBS at STUFE=4 in PRHI and again get WBS at STUFE=4 > BUKR = XXXX.

I am using SQVI to join std. tables PRPS, PRHI and ZPRPS (Alias of PRPS).

The output of the same is giving 610 records, while in std PRPS table, the record is 4510 something.

Also, upon execution I am getting an information as :

The field Level in Project Hierarchy cannot be totalled because of field overflow

Message No. 0K051

Can anyone help on how can I manage the output records.

Regards,

AKASH.