Supported Process Argument Types

Please find below a list containing the input and output argument types supported when adding a process to an app.

Supported Argument Types

Supported Type	.NET type	Description	Limitation (If any)
Text	System.String	Text
Number (Integer, Double, Float, Decimal)	System.Int16, System.Int32, System.Int64, System.UInt16,System.UInt32,System.UInt64,System.Double, System.Single System.Decimal	Integer/Floating point Numeric type & Decimal value
Boolean	System.Boolean	True/False
DateTime	System.DateTime, System.DateTimeOffset	Date and time	Customers should always use UTC or include a DateTimeOffset
Supported Type[](List)	System.Array	Array of supported types . For example array of text or numbers
List <ST> (List)	System.Collections.Generic.List	List of supported types.
IList <ST> (List)	System.Collections.IList	Iterable list of supported types.

Important:

• Data without timezone information should be treated as UTC.
• Data with timezone information will be displayed to the end-user in their browser’s timezone.

Note:

If a data type is not explicitly supported, the following logic is applied:

• If the datatype ends with “[]”, it is an array.
• If the datatype came back as “null”, it is interpreted as “anything” by Apps
• If the datatype is neither "[]" nor "null", it is interpreted as an “object”

Supported Inference Types

For any .NET type variable not supported by Apps in its out of the box format, the Job history can be used to infer with the DataType, At least 1 job that matches the current version of the process is needed. Keep in mind that this type of auto-detection is not always precise. Please verify them on the UiPath Process properties page and change them if needed.

Supported Inference Type (SIT)	.NET type	Description
DataTable	System.Data.DataTable	The Tabular Data field detection inference is based and may not identify types correctly, even if they are Supported Types.
SIT[](List)	System.Array	List of supported inference types.
UiPath Generic	UiPath.Core.GenericValue	Common default type in Studio.
Object	System.Object	A generic Object

Important:

Object fields such as DataTable > DataColumn also use inference based detection, even when those fields are Supported Types. This may lead to unpredictability, so you can manually specify fields for DataTable and other Objects within App Studio.

DataTable: Only the data from a DataTable can be used within an app. Field Constraints, Expression Columns, and Primary Keys are not supported.

Following Arguments Will Be Supported in Future

Supported Type (ST)	.Net Type	Description
TimeSpan	System.TimeSpan	A time interval
IEnumerable	System.Collections.Generic.IEnumerable	Iterable list of Choices. Treated same as Enum/ChoiceSet
ChoiceSet	System.Enum	List of Choices

Note:

• The process payload size limit between Robot Service and Robot Executor is 10 MB.
• The entire process arguments of a single process cannot exceed 10 MB.