Root element for a Use Case descriptor. Use Case unique identifier. Restriction: 4 chars hexadecimal. Use Case version. To be incremented when a breaking change is introduced.Restriction: 1-255 Use Case name. Multilingual.Restriction: At least 1 name must be defined. Use Case description. Multilingual.Restriction: At least 1 description must be defined. Use Case data schema. Used to decode a VDS payload.Restriction: Exactly 1 schema MUST be defined. Defines an extension point where new features (proprietary or not) can be added. Default extensions are: - Policies: Validation policies - Presentation views: Templates used to render VDS content Element used to define a translatable value. Translation is based on the xml:lang provide, ie a 2 letter language code. Sets an element as Nillable. By default, an element is not nillable. Sets constraints on a String field. Minimum string length. Optional. Values from 0 to 4,294,967,295. Maximum string length. Optional. Values from 0 to 4,294,967,295. Allowed string pattern. Supports JavaScript RegEx. Optional. The field value encoding. If specified, the restrictions are validated against the decoded value. Base entity for a schema field. Field name. Required Field representing a sequence of characters.Restrictions can be applied using StringConStraints element. Value restrictions. Optional. Value restrictions. Optional. Boolean field restrictions. Booleanfield type. Boolean field restrictions. Integer field restrictions. Minimum value. Optional.Values from -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807. Maximum value. Optional.Values from -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807. Allowed int pattern. Optional. Integer type field. Integer field restrictions. Optional. Float field restrictions. Minimum value. Optional. The decimal separator is always a point (.), and no separation at the thousand mark may be added. There is no support for scientific notation. Allows any number of insignificant leading and trailing zeros (after the decimal point). Maximum value. Optional. The decimal separator is always a point (.), and no separation at the thousand mark may be added. There is no support for scientific notation. Allows any number of insignificant leading and trailing zeros (after the decimal point). Float type field. Float field restrictions. Optional. Date field restrictions. Minimum date allowed. Optional. Date must have the following format: yyyy-MM-dd. Maximum date allowed. Optional. Date must have the following format: yyyy-MM-dd. Date from which to calculate the number of days. Optional. Must be a date format (yyyy-MM-dd) Date type field. Represents the number of days from 2000-01-01, to a maximum of 65535 days (2 bytes). Date field restrictions. Optional Value restrictions. Optional. Timestamp field restrictions. Minimum date allowed. Optional. The dateTime is specified in the following form "YYYY-MM-DDThh:mm:ss". Maximum date allowed. Optional. The dateTime is specified in the following form "YYYY-MM-DDThh:mm:ss". Timestamp field restrictions. Optional Base constraints type. Objecttype field. Type of object. Must be a reference to an object defined in Types. Binary field restrictions. Minimum binary length. Optional. Values from 0 to 4,294,967,295. Maximum binary length. Optional. Values from 0 to 4,294,967,295. Allowed binary pattern. Supports JavaScript RegEx. Optional. Binary type. Binary field restrictions. Value restrictions. Optional. Restrictions common to all Array field type. Minimum array size. Optional. Values from 0 to 4,294,967,295. Maximum array size. Optional. Values from 0 to 4,294,967,295. Base type for Array fields. Array field restrictions. Optional. String array field type. String value restrictions. Optional. Boolean array field type. Boolean restrictions. Optional. Integer array field type. Integer value restrictions. Optional. Float array field type. Float value restrictions. Optional. Date array field type. Date value restrictions. Optional. Timestamp array field type. Timestamp value restrictions. Optional. Object array field type. Object value restrictions. Optional. Binary array field type. Binary value restrictions. Optional. List of fields defined in the payload. List of fields defined in the Auxiliary Data. Optional. If not specified, this means there are no auxiliary data. Type name. Required. Must match any object in schema with same type. Payload definition Auxiliary Data definition. Optional List of custom object types defined by this schema. Base type for an extension. Base type for a field extension. Ensures that the signing certificate is legitimately authorized to produce VDS for this use case. The signing certificate must include the ID in the OID aigcev.policies.usageList Object identifier (OID). Universally unique identifier (UUID) of the signing certificate. The UUID is a 128-bit long, as defined in ISO 9834-8. Manifest format version. MUST be 1.