I have just installed the Brazilian tax module for issuing invoices on Odoo online v 18. I tested it in the sandbox and was able to issue invoices (DANFE) normally. However, when testing the issuance of NFC-e (receipt) without a consumer, I received the following error:
"
Faturamento eletrônico (Brasil)
Code 383: Rejeição: Item com CSOSN indevido [nItem: 1]".
I used the same product as in the regular invoice. Upon researching, I found that this error occurs because SEFAZ rejects the CSOSN code in the XML. I have already configured the company as a Simples Nacional entity, but I continue to receive this error. After several searches, including the Odoo manuals, I could not find a field where I can change this CSOSN; it seems to be pre-configured by Avalara. Can anyone help me?
Just grep'ed the source code - only occurrence of CSOSN is in one test case of Odoo. I didn't check what Odoo is simulating here, also I got no idea about Brazilian accounting. But, as you suggested, it seems to be an external issue on first sight. You may try to reach out to the Odoo support on that one.