Data Validation

The data entry window supports data validation. Validation rules must be set in a project prior to import. Please refer to Discover for ArcGIS Pro user guide, in the Discover Mobile section of the user guide for more information on how to create a mobile project.

Note: It is important to be familiar with the field types in your tables before creating a project. The types of fields will determine how data is entered and validated.

Table Validation

Before taking data into the field the table needs to be configured to have suitable columns to collect data. The columns need to be assigned a Table Validation so the data from the device knows where to be stored.

Tables can have validations attached to them either in the source tables (which is carried through to the mobile clipped tables in the Geopackage) or they can be set up in the clipped tables after the data has been included in the mobile project.

Below is the list of validations and their functions

Validation	Description
Name	Field name
Type	Data Type of the Field
Parameter	Validation parameters for automatic data insertion.
Visible	Choose to show or hide a field, by default, fields are visible. Fields that have validation options applied cannot be hidden, as it may conflict with the validation rules.
Lookup Table	Define a look-up table to associate with a field from a legend created in the Legend Editor. Look-up tables can be used as simple drop-down lists or as enforced validation lists to select predefined values.
Exclusive	When exclusive is enabled only values from the defined lookup list is used for data entry. When exclusive is disabled values from the defined lookup list and user entered values can be used. The exclusive option is only used when a lookup table is also defined for that field. Having exclusive enabled is the default.
Optional	When optional is enabled the field doesn't required data to be entered, it can be left blank. When disabled the data entry for that field is no longer optional and data must be entered (mandatory). By default optional is enabled.
Default value	Define a default value for a field when creating a new record. For a character field type a default value. For a numeric field type a default value. For a date or time field, pick the default date/time. When a lookup table has been defined for the field, select a default value from a drop-down list.
Group	Enter a value used to classify a field into a tabbed group in Discover mobile.
Map Style	A map style can only be selected if a lookup table has been defined for a field. Only one map style can be defined for a table. If a map style is defined for a field, when a map object is digitised and an entry has been selected from a lookup list, the corresponding object style is applied from the lookup table picklist. On the data entry tools a field which has a map style applied has a bold name.
Increment	Define an increment value for a numerical field or a character field. If a character field contains both alpha and numerical values the numerical values are incremented.
Min Numeric	Define a minimum numerical value cap. Numbers below this value cannot be entered.
Max Numeric	Define a maximum numerical value cap. Numbers above this value cannot be entered.
Min Date	Define a minimum date value cap. Dates below this value cannot be entered.
Max Date	Define a maximum date value cap. Dates above this value cannot be entered.
Min Date Time	Define a minimum date/time value cap. Dates or times below this value cannot be entered.
Max Date Time	Define a maximum date/time value cap. Dates or times above this value cannot be entered.
Min Time	Define a minimum time value cap. Times below this value cannot be entered.
Max Time	Define a maximum time value cap. Times above this value cannot be entered.

Note: Validations are greyed out if they are not applicable to a column type. For example, a lookup table is only active if the field is a text field

The following variables can be set for data collection via the mobile app:

Parameter	Field Type	Description
MapX	Double/Float	Inserts centroid X/Easting/Longitude coordinate value, coordinate projection defined by table/layer.
MapY	Double/Float	Inserts centroid Y/Northing/Latitude coordinate value, coordinate projection defined by table/layer.
RepeatValue	All	Repeats previous record field value into the new record.
CurrentDate	Date	Inserts the current date into the field.
CurrentTime	Time	Inserts the current time into the field.
CurrentDateTime	DateTime	Inserts the current date and time into the field.
Dip	Double/Float	Define dip field used when capturing structural data. The dip value is automatically entered.
DipDirection	Double/Float	Define dip direction field used when capturing structural data. Use this parameter if capturing Dip/Direction structural data. Dipdirection value is automatically entered.
DiscoverCode	Double/Float	Define discover code field used when capturing structural data. This parameter is required to define unique structure codes. Discover code value is automatically entered.
Strike	Double/Float	Define strike field used when capturing structural data. Use this parameter if capturing Right Hand Rule structural data. Bearing/Strike value is automatically entered.
GPS_X	Double/Float	Inserts GPS location coordinate (Longitude) from a GPS receiver.
GPS_Y	Double/Float	Inserts GPS location coordinate (Latitude) from a GPS receiver.
GPS_Z	Double/Float	Inserts GPS height/RL value (metres) from a GPS receiver.
GPS_DateTime	DateTime/Text	Inserts GPS current date and time value recorded from a GPS receiver.
Photo	Text (255)	Define a field to be used to capture an image when using the data entry tools or Discover Mobile. This field stores the path to the image and must be 255 characters long. Multiple photo fields can be defined.
PhotoID_Field	Numeric/Character	Define a field to be used to rename a photo when captured in Discover Mobile. Generally, this field contains unique values or be a primary key field.
Outcrop_Photo	Text (255)	Define a field to be used to capture an outcrop image when using the data entry tools or Discover Mobile. This field stores the path to the image and must be 255 characters long. Multiple photo fields can be defined.
Audio	Text (255)	Define a field to be used to capture an audio clip when using the data entry tools or Discover Mobile. This field stores the path to the audio file and must be 255 characters long. Multiple audio fields can be defined.
GPS Fix	Text (255)	GPS Fixl Accuracy of GPS either None, 2D or 3D.
GPS_VDOP	Double/Float	Vertical Accuracy of GPS point recorded.
GPS_HDOP	Double/Float	Horizontal Accuracy of GPS point recorded.
GPS_PDOP	Double/Float	Position Accuracy of GPS point recorded.
GPS_Speed	Double/Float	Inserts GPS current speed value recorded from a GPS receiver.
GPS_Bearing	Double/Float	Inserts GPS bearing recorded from a GPS receiver.
Projected_X	Double/Float	Inserts projected location coordinate (X) from a GPS receiver.
Project_Y	Double/Float	Inserts projected location coordinate (Y) from a GPS receiver.