True or False: A process variable must be set as a parameter to pass data into the process when it starts.

A process variable must indeed be set as a parameter to facilitate the passing of data into the process at the time it starts. This parameterization allows the process to receive specific values or data directly from the initiating context, enabling it to function properly based on the input provided.

When a process is initiated, parameters define the specific inputs it expects. By aligning a process variable as a parameter, you ensure that the data is correctly fed into that variable, allowing its functionality and workflow to utilize the provided information effectively.

The parameter configuration is a fundamental aspect of process design in Appian, as it promotes data integrity and operational fluidity, allowing for dynamic and adaptable processes that can respond to varying inputs.