The following types are available:

• Simple data request:
  Ordinary input and output fields are created in the PI sheet or cockpit.
• Repeated data request:
  A table for the input and output of data is created in the PI sheet or cockpit.

If you use a repeated data request, you also have the following options:

• Minimum number of table lines:
  You can specify the minimum number of table lines that must be edited. In the PI sheet, you cannot complete the corresponding process step unless you have entered data in these lines.
• Maximum number of table lines:
  You can specify the maximum number of table lines permitted. Once data has been entered in these lines, the system does not further lines.

When defining data requests, you specify the following information in the process instruction:

• Type of data request
• If required, the minimum number of tables lines that must be edited
• If required, the maximum number of tables lines that may be edited

To enter this information, you assign the following characteristics to the process instruction in the order specified below: