Diagnosis
The process instruction is of type "process data request".
Characteristic PPPI_DEFAULT_VARIABLE defines a variable whose value isto be assigned to a characteristic of the requested message. Thecorresponding message characteristic must be assigned to characteristicPPPI_EXTERNAL_VALUE immediately afterwards.
However, the message characteristic is not defined at this point in theprocess instruction.

Procedure
RESET N1
Assign characteristic PPPI_EXTERNAL_VALUE to the process instructionimmediately after characteristic PPPI_DEFAULT_VARIABLE.
Assign the name of the message characteristic whose value is to beassigned by the variable to characteristic PPPI_EXTERNAL_VALUE.