FF.5 - CITI - DAT

Hi All

I can´t process by FF_5 the return file from Citibank (Brazil).

Citi format is 240 position.

I am using B (Cobrança/Pagar Itau - Brasil) format in FF.5.

The extension of the file should be RET or DAT?

I recieved the below error:

Imported bank file format does not correspond to selected format

let me know if someone has any idea

Thanks in advance.