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2657631 - CALL_FUNCTION_SIGNON_INCOMPL: Incomplete logon data during SUM

Symptom

You are performing an upgrade or update using SUM, when below error occurs in any phase:

RFC login to system <SID> ashost <hostname> nr <In. nr> gwhost <hostname> gwservice sapgw<nr> failed
with code 3 key CALL_FUNCTION_SIGNON_INCOMPL: Incomplete logon data.

When you check in ST22, you find a dump like below:

Category               Installation Errors
Runtime Errors         CALL_FUNCTION_SIGNON_INCOMPL
Date and Time          <Date> <Time>

Error analysis
    The logon data for the user "DDIC " is incomplete.

If, during an RFC (Remote Function Call), an explicit user
or an explicit client is requested, you must enter an explicit
password for the user (see Transaction SM59).

Other related dumps that can occur at the same time : CALL_FUNCTION_SINGLE_LOGIN_REJ, CALL_FUNCTION_SYSCALL_ONLY, CALL_FUNCTION_SIGNON_REJECTED.


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Environment

Software Update Manager 1.0/2.0

Product

SAP NetWeaver 2004 ; SAP NetWeaver 7.0 ; SAP NetWeaver 7.1 ; SAP NetWeaver 7.2 ; SAP NetWeaver 7.3 ; SAP NetWeaver 7.4 ; SAP NetWeaver 7.5 ; 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

Keywords

CALL_FUNCTION_SIGNON_INCOMPL, ddicpwd, CALL_FUNCTION_SINGLE_LOGIN_REJ, CALL_FUNCTION_SYSCALL_ONLY, CALL_FUNCTION_SIGNON_REJECTED, DDIC password, DDIC Password currently not available!, SUM , KBA , BC-UPG-TLS-TLA , Upgrade tools for ABAP , Problem

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