Do anybody know how to correct that? Intercompany elimination should be zero at the end but this 180?

We'd need more info on this. What subsidiary are we looking at in this screenshot... consolidated? I assume so. Was interco elmins run? Was every single transaction that hit those AR and AP accounts marked to eliminate? And were interco journals used for those original postings? or separate journals with differing currencies?

do you use auto-balance functionality? do your intercompany AR and AP GL accounts set to eliminate? Do you have intercompany customers and vendors set up?