2357612 - Short dump SYNTAX_ERROR during Gateway service activation in CL_GBAPP_APV_PR_API or CL_GBAPP_APV_PO_API

During the activation of an SAP Gateway service the following error message:

• System error message: Syntax error in program CL_GBAPP_APV_PO_API=======
  Message no. /IWFND/MED151

AND/OR

• Short dump raised similar like:

Category                       ABAP Programming Error
Runtime Errors              SYNTAX_ERROR
ABAP Program               CL_GBAPP_APV_PO_API===========CP
Application Component   MM-PUR

Line 104 Method GET_WORKITEM_COUNT
"LT_TASK_IDS" is not type-compatible with formal parameter "IT_TASK_IDS".

The affected classes can be CL_GBAPP_APV_PO_API, CL_GBAPP_APV_PR_API, or similar using the Task Gateway.

Runtime Error CALL_FUNCTION_REMOTE_ERROR starting from class /IWFND/CL_MED_REM_EXPLORATION indicating similar syntax error like above also has to be considered.

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• SAP Gateway
• Task Gateway
• Gateway Business Workflow enablement
• SAP NetWeaver 7.0
• SAP enhancement package 1 for SAP NetWeaver 7.0
• SAP enhancement package 2 for SAP NetWeaver 7.0
• SAP enhancement package 3 for SAP NetWeaver 7.0
• SAP NetWeaver 7.2
• SAP NetWeaver 7.3
• SAP enhancement package 1 for SAP NetWeaver 7.3
• SAP NetWeaver 7.4
• SAP NetWeaver 7.5
• SAP NetWeaver Application Server 7.51 for SAP S/4HANA 1610 (SAP_UI 7.51)

SAP Gateway all versions ; SAP NetWeaver 7.0 ; SAP NetWeaver 7.2 ; SAP NetWeaver 7.3 ; SAP NetWeaver 7.4 ; SAP NetWeaver 7.5 ; SAP NetWeaver Application Server 7.51 for SAP S/4HANA 1610 ; SAP enhancement package 1 for SAP NetWeaver 7.0 ; SAP enhancement package 1 for SAP NetWeaver 7.3 ; SAP enhancement package 2 for SAP NetWeaver 7.0 ; SAP enhancement package 3 for SAP NetWeaver 7.0

CL_GBAPP_APV_PR_API, /IWFND/CL_MED_REM_EXPLORATION=>GET_BEP_OBJECT_MODELS, CALL FUNCTION lv_function_name DESTINATION 'NONE', /IWBEP/FM_MGW_GET_OBJ_MODELS, CL_GBAPP_APV_PR_MDP=>/IWBEP/IF_MGW_MED_LOAD~INITIALIZE, lo_api = cl_gbapp_apv_pr_api=>get_instance( )., /IWFND/R_MGW_REGISTRATION, "LT_TASK_IDS" ist nicht typkompatibel zum formalen Parameter "IT_TASK_IDS", CL_GBAPP_APV_PO_MDP, CL_GBAPP_APV_PR_MDP, scenario, scenario collection, wrong task count value, <Scenario Name>, ScenarioCollection, Task Definition, Task Type, <TaskID>_<WorkflowID>_<StepID> , KBA , zgbapp_prapproval , zgbapp_poapproval , zsra001_pcapproval , cl_sra001_pc_mdp , sra001_pcapproval , cl_sra001_pc_api , gbapp_prapproval , gbapp_poapproval , get_task_count , /iwwrk/if_tgw_scenario , rfc error: syntax error , syntax error in program , OPU-BSC-TGW , Task Gateway , MM-PUR , Purchasing , OPU-GW-COR , Framework , OPU-BSE-WFM , Gateway Business Workflow Enablement , OPU-BSE-SB , Service Builder , Problem