apiKey	xs:string (required)	Required if no X-ELS-APIKey HTTP header, this represents a unique application developer key providing access to resource.
docId	xs:string (required) (repeating)	DocId values corresponding to record to retreieve. The docId values are found in the DOC/DOC-ID values of the results returned by the Engineering Village Search API.
access_token	xs:string	Override for HTTP header Authorization, this contains the OAuth bearer access token, where the format of the field is "<token>" (where the token represents the end-user session key). The presence of a bearer token implies the request will be executed against user-based entitlements.

200 - Engineering Village Retreival Response 400 - Invalid Request - This is an error that occurs when invalid information is submitted. 401 - Authentication Error - This is an error that occurs when a user cannot be authenticated due to missing/invalid credentials (authtoken or APIKey). 403 - Authorization/Entitlements Error - This is an error that occurs when a user cannot be authenticated or entitlements cannot be validated. 429 - Quota Exceeded - This is an error that occurs when a requester has exceeded the quota limits associated with their API Key. 500 - Generic Error - This is a general purpose error condition, typically due to back-end processing errors.