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Minor change in docs

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muawiakh 2017-11-23 10:43:48 +01:00
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docs/server/source/data-models/transaction-model.rst
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@ -45,7 +45,7 @@ Here's some explanation of the contents:
- **metadata**: User-provided transaction metadata.
It can be any valid JSON document, or ``null``.
**NOTE:** When using MongoDB for storage, certain restriction apply
to all (including nested) keys of the ``"data"`` JSON document:
to all (including nested) keys of the JSON document:
1) keys (i.e. key names, not values) must **not** begin with the ``$`` character, and
2) keys must not contain ``.`` or the null character (Unicode code point 0000).
3) The key `"language"` (at any level in the hierarchy) is a special key and used for specifying text search language. Its value must be one of the allowed values; see the valid `Text Search Languages <https://docs.mongodb.com/manual/reference/text-search-languages/>`_ in the MongoDB Docs. In BigchainDB, only the languages supported by *MongoDB community edition* are allowed.