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# Neptune ML SPARQL 推理查询的异常列表
<a name="machine-learning-sparql-exceptions"></a>

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+ **`BadRequestException`** – *消息*：`The SERVICE http://aws.amazon.com/neptune/vocab/v01/services/ml#inference expects at least 1 value for the parameter (parameter name), found zero.`
+ **`BadRequestException`** – *消息*：`The SERVICE http://aws.amazon.com/neptune/vocab/v01/services/ml#inference expects at most 1 value for the parameter (parameter name), found (a number) values.`
+ **`BadRequestException`** – *消息*：`Invalid predicate (predicate name) provided for external service http://aws.amazon.com/neptune/vocab/v01/services/ml#inference query.`
+ **`BadRequestException`** – *消息*：`The SERVICE http://aws.amazon.com/neptune/vocab/v01/services/ml#inference expects the predicate (predicate name) to be defined`。
+ **`BadRequestException`** – *消息*：`The SERVICE http://aws.amazon.com/neptune/vocab/v01/services/ml#inference expects the value of (parameter) (parameter name) to be a variable, found: (type)"`
+ **`BadRequestException`** – *消息*：`The SERVICE http://aws.amazon.com/neptune/vocab/v01/services/ml#inference expects the input (parameter name) to be a constant, found: (type)`。
+ **`BadRequestException`** – *消息*：`The SERVICE http://aws.amazon.com/neptune/vocab/v01/services/ml#inference is expected to return only 1 value`。
+ **`BadRequestException`** – *消息*：`"The SERVICE http://aws.amazon.com/neptune/vocab/v01/services/ml#inference only allows StatementPatternNodes`。
+ **`BadRequestException`** – *消息*：`The SERVICE http://aws.amazon.com/neptune/vocab/v01/services/ml#inference does not allow the predicate (predicate name)`。
+ **`BadRequestException`** – *消息*：`The SERVICE http://aws.amazon.com/neptune/vocab/v01/services/ml#inference predicates cannot be variables, found: (type)`。
+ **`BadRequestException`** – *消息*：`The SERVICE http://aws.amazon.com/neptune/vocab/v01/services/ml#inference predicates are expected to be part of the namespace (namespace name), found: (namespace name)`。