The following graphic uses a goods issue message as an example to illustrates the relationship between the process data request and the message category.

The following information is contained in the process instruction:

• A simple data request is defined since only one goods issue is to be posted.

• A message of category PI_CONS is to be created for the process instruction.

• The order number, phase, and material are available in the process order. For this reason, values have already been assigned to the corresponding message characteristics in the process instruction.

• Automatic value assignment in the PI sheet is defined for the date and time.

• The characteristic for the material quantity is marked as an input value. The text Quantity: is defined as the input request for the input value.

• A value has already been assigned to the message characteristic for the unit of measurement in the process instruction. The characteristic is assigned after the input value. For this reason, it is displayed after the input field in the PI sheet.

• All other characteristics of the message category are not required for message processing. For this reason, they have not been included in the process instruction.