What is a Data Input in BPMN?

A Data Input represents data required for a process or activity to start. It makes input parameters explicit, documenting what information must be provided before execution.

When should I use a Data Input?

Use Data Inputs to document required input parameters for processes and activities-API inputs, report filters, call activity parameters. They clarify data dependencies.

How is the Data Input different from related elements?

Data Inputs show required input parameters; Data Outputs show produced results. Data Objects show data flowing through activities. Data Inputs specifically indicate entry requirements.

dataVariant of Data Object

Data Input

A Data Input represents data required for a process or activity to start. It visualizes input dependencies-what information must be available before execution can begin.

What is a Data Input?

A Data Input explicitly shows what data a process or activity requires to execute. It is an input parameter that must be provided before the process or activity can start.

Visual Representation

A Data Input displays as a document shape with an unfilled arrow pointing into it. The arrow indicates that data flows into (is provided to) the process or activity.

Key Characteristics

Input requirement: Shows mandatory data needed to start
Parameter visualization: Makes input parameters explicit in diagrams
Process boundary: Often shown on process boundaries for called processes
Precondition documentation: Documents what must be available

How it connects

Data OutputData Inputs define what the process needs; Data Outputs define what it produces — they form an interface Data ObjectData Objects flow within the process; Data Inputs represent prerequisites from outside the process Data AssociationData Associations connect Data Inputs to the activities that consume them StartData Inputs are typically consumed near the start of the process to provide initial context

Common Use Cases

API Input Parameters

Show that a service process requires "CustomerID" and "OrderData" as inputs.

Report Generation

Indicate that a report process needs "DateRange" and "DepartmentFilter" inputs.

Call Activity Parameters

Document the input data a reusable process expects when called.

Frequently Asked Questions

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