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Step by Step guide for SAP Support Backbone Update


All customers with ABAP-based SAP systems needs to switch to the new infrastructure before January 2020 to ensure smooth connectivity.

Resolution for Solution Manager.

Look at this step-by-step guide by Praveena Subramani

Resolution for other ABAP systems.

Step-by-step guide.

0. Make a backup.
1.Technical communication user for the systems

We must request a technical communication user for the systems ( Refer to SAP Note 2174416) . (You cannot convert a regular S-user into a technical communication user.) The technical communication user is required, for example, to download digitally signed SAP Notes from Note Assistant (transaction SNOTE). Technical communication users cannot be used to log on in dialog mode, and their passwords do not expire.

For this step, we need Handling of Technical Communication Users  here –

A user was successfully requested.


2. Required ST-PI and ST-A/PI Plug-In Versions for SAP NetWeaver
● ST-PI 2008_1_7xx SP20 and higher, or ST-PI 740 SP10 and higher
● ST-A/PI 01T* SP01 and higher
Check ST-PI and ST/PI version


Download and implement actual ST-PI and ST-A/PI version in SPAM transaction
3. Import certificates into STRUST transaction
3.1 Download attachments from Note #2631190
3.2.  Import certificates in STRUST transaction
4. Maintain ssl/client_ciphersuites parameter in RZ11 transaction.
Set ssl/client_ciphersuites = 150:PFS:HIGH::EC_P256:EC_HIGH in SAP instance profile (Dialog instance, restart is required)
5.Update SAP Kernel to latest version including SAPCRYPTOLIB.
6.Enabling Note Assistant for TCI and Digitally Signed SAP Notes
REVISED! See Updates at the end of this blog-post!
6.1. Implement Note #2836302
2836302 – Automated guided steps for enabling Note Assistant for TCI and Digitally Signed SAP Notes
Objects inside (DYNP -Web Dynpro, FUNC – Functions, REPS – Reports, etc)
7.Run Report – RCWB_TCI_DIGITSIGN_AUTOMATION (Automated guided steps for enabling Note Assistant for TCI and Digitally Signed SAP Notes)
    7.1. Implement Notes:  2508268, 2721941 (Step 10 of RCWB_TCI_DIGITSIGN_AUTOMATION Report)
   7.2. Configure Download Procedure for SNOTE
     Enable HTTP Protocol and RFC Destinations


7.3. Maintain Procedure Connectivity
Upload TCI Package  SAPK75000KCPSAPBASIS
7.4. Upload Note 2827658
7.5. Maintain Task List Run SAP_BASIS_CONFIG_OSS_COMM
Step – Create HTTPS Connections for SAP Service
7.6. Lock Procedure Configuration in Transport Request
8.Finally Check
Check the download of Digitally Signed test Note 2424539
Connect to <host> failed: NIEROUT_INTERN(-93)
Check note
1) The used SAProuter string to access either target hosts, or is too long. In the SAP_BASIS release 740 the SAP router string will be truncated after 100 Bytes.
Example:  /H/<customer-saprouter_1>/S/sapdp99/H/<customer-saprouter_2>/S/sapdp99/H/<sapserver>/S/sapdp99/H/   -> error
2) The Port Number 443 of Access URL was manually change to another number, e.g. icm http or https port.
3) The SAProuter string was copied from SAPOSS or SAP-OSS included host oss001.Therefore the target host is wrong, e.g. /H/<customer-saprouter_1>/S/sapdp99/H/<customer-saprouter_2>/S/sapdp99/H/<sapserver>/S/sapdp99/H/ .
Problem resolution.
1) This issue has been fixed in software component SAP_BASIS release 740 SP18 or higher.
Reduce the total length of the SAP router string in task “Create Support Portal HTTP Destination (SM59)” by
a) using port numbers instead of service names (e.g. 3299 vs sapdp99)
b) using IP addresses or shorter host names (e.g.
 /H/<customer-saprouter_1>/S/sapdp99/H/<customer-saprouter_2>/S/sapdp99/H/<sapserver>/S/sapdp99/H/   -> error ( > 100 Bytes )
/H/<IP_customer-SR_1>/S/3299/H/<IP_customer-SR_2>/S/3299/H/<IP_sapserver>/S/3299/H/   -> OK ( < 101 Bytes)
2) Change the Port Number / Service No. of Access URL back to 443.
3) Delete the string “oss001″in the SAProuter string.
In other words – check
Target host for RFC destinations:


After January 1, 2020  step 6.1 transformed to the next points:
  • – Download Note as a *.SAR file with the note from launchpad
  • – Extract *.SAR file from a note (ZIP file inside)
  • – Unzip the file with the note (text file inside)
  • – Upload *.txt file in the SNOTE transaction


SAP Support Backbone Update procedure provided.
Useful resources about this topic.
Cheat Sheet – Enabling SNOTE for Digitally Signed SAP Notes and for TCI:
2836302 – Automated guided steps for enabling Note Assistant for TCI and Digitally Signed SAP Notes:
Digital Signature.pdf attached to Note 2576306
SAP Support Backbone Connectivity Troubleshooting
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  • Hi All,


    I am Facing below issue while configuring HTTPS Destination for SAP Note Download inSAP_BASIS release 722.

    *** WARNING => Connection request from (35/43/1) to host:, service: 443 failed (NIEHOST_UNKNOWN)

  • Despite of that many sapnotes on the topic,

    the customizing of the ANST has been forgotten in all of them => table ANST_SETTINGS

    (to change the RFC to new support portal)