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Co-authored-by: Thomas Frauenstein <[email protected]>

chapters/data-formats.adoc

@@ -136,7 +136,7 @@ However, the timezone information can be also provided
 as an additional context information via other fields indicating location.
 * `datetime` should be used in all other cases where an exact point in time is required, 
 for instance, datetimes for supplier advice, specific processing events, fast delivery planning dates.
-This format requires the explicit time zone offset to be provided,
+As required in <<169>>,  `datetime` requires the explicit time zone offset to be provided,
 which avoids misinterpretations and eliminates the need of an additional context to provide.