Status of Process chain execution using FM RSPC_API_CHAIN_START

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Hi,

I have executed a Process chain using the FM RSPC_API_CHAIN_START:

CALL FUNCTION 'RSPC_API_CHAIN_START'

EXPORTING

i_chain = 'ZPC_TEST'

I_T_VARIABLES =

i_synchronous = 'X'

I_SIMULATE =
I_NOPLAN =
I_DONT_WAIT = 'X'
I_POLL =

IMPORTING

e_logid = v_logid

EXCEPTIONS

failed = 1

OTHERS = 2.

I need know when this process chain have finished in order to populate the log by screen. I was using other function RSPC_API_CHAIN_GET_STATUS into a loop in order to give the status. This FM return A = Active, G = Green, R = Red OR X = Aborted.

WHILE v_status ne 'G' or v_status NE 'R'.

CALL FUNCTION 'RSPC_API_CHAIN_GET_STATUS'

EXPORTING

i_chain = 'ZPC_TEST'

i_logid = v_logid

I_DONT_UPDATE =
I_DONT_POLL =

IMPORTING

e_status = v_status.

ENDWHILE.

the variable should be updated with the current status of the execution but if i execute this code the execution not finish (infinite loop).

Please, how could I know the correct status of the PC?

Thx in advance!