2978721 - Fiori My Inbox application never loads the tasks when accessing via direct link

When accessing a Fiori My Inbox link directly, My Inbox shows three loading dots and never loads the tasks.

In transaction ST22, the below dump can be found:

Category               ABAP programming error                                                       
Runtime Errors         GETWA_NOT_ASSIGNED                                                           
ABAP: Program          /IWFND/CL_MGW_REQUEST_MANAGER=CP                                             
Application Component  OPU-GW-COR                                                                                                                  
                                                                                                     
Short Text                                                                                        
    Field symbol has not been assigned yet. 

Category               ABAP Programming Error Runtime Errors         GETWA_NOT_ASSIGNED ABAP Program           /IWFND/CL_MGW_REQUEST_MANAGER=CP Application Component  OPU-GW-COR

Short text

Field symbol has not been assigned yet.

Error analysis

An attempt was made to access a field symbol that has not been assigned yet (data segment number "-1").

Server-Side Connection Information

Universal resource ID /sap/opu/odata/IWPGW/TASKPROCESSING/$batch Program.............. /IWFND/CL_MGW_REQUEST_MANAGER=CP

Source Code Extract

READ TABLE lt_operation ASSIGNING <ls_operation>    WITH KEY packet_no    = ls_batch_info-packet_no            operation_no = ls_batch_info-operation_no. >>>>>         <ls_operation>-operation_state = ls_batch_info-operation_state.

Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental.

Read more...

• Task Gateway
• SAP Gateway
• Gateway Business Workflow Enablement
• SAP NetWeaver 7.4
• SAP NetWeaver 7.5
• SAP Web Application Server for SAP S/4HANA
• ABAP PLATFORM - Application Server ABAP

ABAP platform all versions ; SAP Gateway all versions ; SAP NetWeaver 7.4 ; SAP NetWeaver 7.5 ; SAP NetWeaver Application Server 7.51 for SAP S/4HANA 1610 ; SAP NetWeaver Application Server for ABAP 7.52 for SAP S/4HANA

SAP_GWFND, IW_PGW, /IWPGW/TGW, /IWWRK/WORKFLOW, IW_BEP, TASKPROCESSING, /IWFND/CL_MGW_REQUEST_MANAGER=CP, GETWA_NOT_ASSIGNED, st22, dump , field symbol has not been assigned yet, data segment number "-1", /sap/opu/odata/IWPGW/TASKPROCESSING/$batch , KBA , OPU-BSC-TGW , Task Gateway , OPU-GW-COR , Framework , OPU-BSE-WFM , Gateway Business Workflow Enablement , Problem