3330470 - SNOTE Error - Parameter IV_USERNAME still has initial value; define a value

While downloading a note using SNOTE transaction, system throws below error popup:

Parameter IV_USERNAME still has initial value; define a value

Error message no SCWN801

• SAP Netweaver AS ABAP
• SNOTE (SAP Note Assistant tool)

Parameter IV_USERNAME still has initial value; def ine a value, IV_USERNAME, define a value, initial value, SCWN801, SNOTE, SAP-SUPPORT_PORTAL, SAP-SUPPORT_NOTE_DOWNLOAD, RCWB_SNOTE_DWNLD_PROC_CONFIG, HTTP, Protocol, SAP_BASIS_CONFIG_OSS_COMM, RCWB_TCI_DIGITSIGN_AUTOMATION, SAPOSS , KBA , BC-UPG-NA , Note Assistant , Problem