attributes property

Additional local inventory attributes, for example, store name, promotion tags, etc.

This field needs to pass all below criteria, otherwise an INVALID_ARGUMENT error is returned: * At most 30 attributes are allowed. * The key must be a UTF-8 encoded string with a length limit of 32 characters. * The key must match the pattern: a-zA-Z0-9*. For example, key0LikeThis or KEY_1_LIKE_THIS. * The attribute values must be of the same type (text or number). * Only 1 value is allowed for each attribute. * For text values, the length limit is 256 UTF-8 characters. * The attribute does not support search. The searchable field should be unset or set to false. * The max summed total bytes of custom attribute keys and values per product is 5MiB.