php - Attempted conditional constraint is not an indexable operation issue in dynamodb -

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My query in DynamoBib is not working with the comparative operator in addition to EQ in PHP 

  $ response = $ client- & gt; Query (array "(" TableName "=> gtk; tableName," IndexName "= & gt;" Topeting ", // GSI Index name" capacitance "=> array (" Rating "=> Array (" comparison operator " "=", "NE", // only 'EQ' works "attribute value list" => array (array :: type = STRING = & gt; "1186") // sample value)), "Scanned endforward" = & gt; true; "border" => 5));   
 When I see the  rating  at  topRating  GSI 
 
 
 
 
 
 
 
 Fatal error: unblocked ovs \ dynamo debe \ exception \ validation exception: AWS error code: validation exception, status code: 400, AWS request ID: XXXXXYYYYZZZZ, AWS error type: client, AWS error message: The conditional barrier attempt is not an indexable operation; User-agent: AAS-SDK-PP2 / 2.7.0 Ghazle / 3. 9.2 Seral / 7.1 9.7 Throw in PHP / 5.4.30 Or 
 
 
 
 
 
 
 
 
 
 
 NE  operator: 
 
 
 Scan operation support All available comparison operators query operations support the subset of the comparison operator available: EQ Operation supports it, LE, LT, GE, GT, BY, and BEGINS_WITH 
 
 
 operation.

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