The clue is in the name: WIP_BERROKINPROGRESS is not an error indication!
And yet the documentation of wip_bearerStart specifically states that non-zero return values are error indications, and lists WIP_BERROKINPROGRESS as an error code 
This really is unhelpful and misleading
See: viewtopic.php?f=29&t=4000&start=0
and: viewtopic.php?f=16&t=1921&p=12257&hilit=WIP_BERR_OK_INPROGRESS#p12257
Perhaps it would be better to follow the example of adl_fcmSendData, where there are two “success” return codes - OK and ADL_FCM_RETOKWAIT_RESUME - which are clearly distinct from the ADL_RET_ERR… failure codes 
medhat - was there a question you wanted to ask, or a point you wanted to make…?
Example of someone confused by calling this an “error” i [/i]code: https://forum.sierrawireless.com/t/q2686-gprs-problem/4829/12