If integrated to Sage 300 and the GL Code Site Segment configuration is turned on, the site codes on a site record in byondpro must also be within Sage 300.
From within Sage 300, visit General Ledger > GL Setup > Segment Codes to check the segment codes.
With the Segment Name filtered by site, Highview Remembrance Park has a segment code of 30, matching that as can be seen in the Highview Remembrance Park site record in our database.