eventix_to_exact
needs a "setting.json with the following data:
{
"journal": "{your journal account}",
"gbrkticket": "{your ledger account for tickets}",
"gbrkservice": "{your ledger account for your service costs}",
"gbrkservpay": "{your ledger account for service cost Eventix/paymentprovider}",
"gbrkincome": "{your suspense account for tickets}",
"gbrkbtw_low": "{your ledger account for low % vat}",
"btw_low_code": "{your btw code for low vat including vat}",
"btw_low_code_excl": "{your btw code for low vat excl vat}",
"gbrkbtw_zero": "{your ledger account for zero % vat}",
"btw_zero_code": "{your btw code for zero % vat}",
"vat_low_perc": 0.09 # amount of low vat
}