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Clarify no empty string allowed in baggage names #4144

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Jul 15, 2024
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2 changes: 1 addition & 1 deletion specification/baggage/api.md
Original file line number Diff line number Diff line change
Expand Up @@ -35,7 +35,7 @@ with _exactly one value_. This is more restrictive than the [W3C Baggage
Specification, § 3.2.1.1](https://www.w3.org/TR/baggage/#baggage-string)
which allows duplicate entries for a given name.

Baggage **names** are any valid UTF-8 strings. Language API SHOULD NOT
Baggage **names** are any valid, non-empty UTF-8 strings. Language API SHOULD NOT
restrict which strings are used as baggage **names**. However, the
specific `Propagator`s that are used to transmit baggage entries across
component boundaries may impose their own restrictions on baggage names.
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