Search for list items by Created Date using caml

Question

Hi all,
I'm trying to find list items with specific attributes using caml.
I created a caml query that uses Last_x0020_Modified and File_x0020_Size for searching items.
then i tried adding Created and Created_x0020_Date both either as Lookup or as DateTime to the caml.
But since i added Created/Created_x0020_Date my query fails with 500 Internal Server Error.
Can someone tell me what I'm doing wrong?
here is my complete Entity I'm sending to SharePoint 2013:
{'query' : { '__metadata': { 'type': 'SP.CamlQuery' }, 'ViewXml': '<View Scope="Recursive">
<Query>
<Where>
<And>
<Leq>
<FieldRef Name="Last_x0020_Modified" />
<Value Type="Lookup">2015-02-25T10:10:03</Value>
</Leq>
<Geq>
<FieldRef Name="File_x0020_Size" />
<Value Type="Lookup">1</Value>
</Geq>
<Leq>
<FieldRef Name="Created" />
<Value Type="DateTime">2015-02-25T10:10:03</Value>
</Leq>
<Eq>
<FieldRef Name="FileDirRef" />
<Value Type="Text">/sites/DennisDevSite/alib/Ordner1</Value>
</Eq>
</And>
</Where>
</Query>
</View>' } }
Thx in advance
Dennis

Answer 1

Try appending "Z" to DateTime. Change 
<Value Type="DateTime">2015-02-25T10:10:03</Value>to <Value Type="DateTime">2015-02-25T10:10:03Z</Value>
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