SQ01 Query treasury REGUH - BSEG

Hi,

how to join tables REGUH and BSEG? I need an import from BSEG, and I can't find on another table, but the SQ01 don't leave to use BSEG in a Join.

I need to find the import of the tax payed in a bank transference from the REGUH. This import only is in the BSEG table.