Make sure you are passing the right system alias SAP_ECC_Financials as in SM59 in LPD_CUST--> UIAPF170 of Instance transactional_CM as in the below screenshot.
Is this an embedded deployment (or) Central Hub Deployment?
If it is as embedded deployment you may try to enable the option force local system if NWBC and run the app again with above URL / from launchpad.
Regards
Virinchy