**Source URL:** https://limited.veevavault.dev/regulatory/vault-api/references/csv-rfc-deviations

# CSV Format Deviations from RFC

When comminicating with Vault API, CSV formatting is compliant with [RFC 4180](https://datatracker.ietf.org/doc/html/rfc4180) with the following exceptions:

*   Both CRLF and LF sequences signal a line ending
*   CR (`u+000d`) character is not supported in values
*   TAB (`u+0009`) character is supported in values
*   BACKSLASH (`u+005c`) character must be duplicated in values to act as a single backslash

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