# NFE-1188

Source: https://xmlvalid.com/rules/NFE-1188

> Rejeição: Percentual de devolução da CBS não informado [nItem: …].

- Level: error
- Rule sets: SEFAZ authorisation rules of NF-e 4.00 MOC 7.0 Anexo I, NTs up to 2026.010
- Context: `nfe:infNFe/nfe:det/nfe:imposto/nfe:IBSCBS/nfe:gIBSCBS`
- Test: `not($cbs/nfe:gDevTrib) or $cbs/nfe:gDevTrib/nfe:pDevTrib`

In English: The CBS refund group (gCBS/gDevTrib) needs pDevTrib.

Validate a document against these rules: https://xmlvalid.com/validate