3245610 - Delete attachment is not working in My Inbox

• Attachment deletion in My Inbox Fiori application fails with Cannot delete attachment error.
  
  AND
  
  
• Attachment ID not found error is visible in the browser console.

• Task Gateway
• Gateway Business Workflow Enablement
• ABAP PLATFORM 1809 - Application Server ABAP (SAP_BASIS 7.53)
• ABAP PLATFORM 1909 - Application Server ABAP (SAP_BASIS 7.54)
• ABAP PLATFORM 2020 - Application Server ABAP (SAP_BASIS 7.55)
• SAP Gateway
• My Inbox Fiori Application

/IWWRK, /IWWRK/WF_WI_ATTACHMENT_DEL, delete attachment, HTTP request failed (400 Bad Request): {"error":{"code":"/IWBEP/CM_MGW_RT/022","message":{"lang","value":"Attachment ID not found"}, /IWBEP/CM_MGW_RT/ 022, HTTP 400, SAP_GWFND, IW_PGW, /IWPGW/TGW, /IWWRK/WORKFLOW, TASKPROCESSING , KBA , OPU-BSC-TGW , Task Gateway , CA-INB-FIO , Fiori UI for My Inbox Application , OPU-BSE-WFM , Gateway Business Workflow Enablement , Problem