I have created a db Entity named TextRec , and the Entity has an
property named id by me.

I want to create an index of the id, but the appcfg.py goes error. The
error is below:

Saving authentication cookies to C:\Documents and Settings
\Administrator/.appcfg
_cookies
Cloning 1 application file.
Closing update.
Uploading index definitions.
Error 400: --- begin server output ---
Creating a composite index failed: This index:
entity_type: "TextRec"
ancestor: false
Property {
  name: "id"
  direction: 2
}

is not necessary, since single-property indices are built in. Please
remove it f
rom your index file and upgrade to the latest version of the SDK, if
you haven't
 already.
--- end server output ---


And the index isn't created.

I think the property named id by me was conflict with something, and
cause the index creating failed.

I want to know how to create an index for my property id.

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