# GenerateRequest

The GenerateRequest object is submitted as part of the Generate request message (input). The message requires the transaction data and information describing the requested transaction.

Parameter | Type | Constraints | Description
--- | --- | --- | ---
TransactionData | sequence | Required | Transaction data in the form of a XML file, confirming to the ExpereTxn schema, used to process the request.
ContentIdentifier | string | Required | Defines the type of content to be used.
CallbackUri | string | Required | A string of characters used to identify a system resource. In this implementation, the value should reflect the fully qualified URL used as the recipient of a response (the callback URI) after the document has been generated. The callback is submitted without security parameters.
AccountID | string | Required | A unique identifier for the account associated with the request. This is assigned as part of an account's administration setup process.
ProductType | string | Required | The type of the product associated with the instance.
IdentityId | string | Required | An identifier for the entity associated with the generated documents submitted on the transaction data.
ExternalKey | string | Required | An identifier defined by the requesting application and passed as a string value. It is typically used to supply an identifier or reference value for a given request and is mapped to the RequestID.
RequestID | string | Required | A unique identifier for the submitted request. Often used for request tracking purposes.
DocumentFormat | DocumentFormatType | Required | Object defining the format type for a document (based on an enumerated value).
DynamicPdfRender | DynamicPdfRender | Required | Object defining the rendering option for a document (based on an enumerated value).
DocumentSet | ArrayOfDocument | Required | Array containing an unbound collection of Document objects.
AncillaryOutput | ArrayOfAncillaryOutputOption | Required | Array containing an unbound collection of AncillaryOutputOption objects.
ExternalPDFDocuments | ExternalPDFDocuments | Required | Container object used to pass base64 encoded PDF documents.
DaysToPersistInLongTermStorage | integer | Optional | The value used to calculate when the transaction will be deleted from the database (in days).
RequestUCD | Boolean | Optional | True or false indicator.
Oppsa | OPPSA | Optional | Container object for OPPSA organization and product information.