Hello nostr:npub17r5v3fh60scdkwnrfr5ehtqkdqkcuxcrnp55g28nxphtm2apj25qglkx7e, to answer your question, SEPA has a maximum trade size of 0.25 BTC, and it requires account signing in order for to enable full trade limits.
I will recommend that you read more on wiki for clarification, use the the link below.