is/instname_encoding SAP Parameter attribute - Define the encoding of the instance name

is/instname_encoding is a SAP Parameter attribute which is used to control Define the encoding of the instance name information. This is available within R/3 SAP systems depending on the version and release level.

Below is the standard documentation available and a few details of the attributes values .

is/instname_encoding profile paramerter attributes

Parameter Name: is/instname_encoding
Description: Define the encoding of the instance name
Default Value: none
Parameter Type ( See IF_PARAMETER_TYPES): String(STRING)
Restriction Values:
Parameter Unit:
Parameter Group: System
CSN Component: BC-CST
System-Wide parameter: No
Dynamic Parameter: No
Vector Parameter: No
Has Sub-Parameters: No
Check Function Exists: No

Parameter documentation

You can use this parameter to control how the SAP Web AS presents the instance name externally (for example, in an HTTP session cookie).
Following values are possible:
none: Plain text: For example, ls100_BCO_10 (default) md5: MD5 hash of the instance name: e.g. FKOuCXKqMVOWyF5syzhQSQ If you use this parameter, make sure it is set the same on all SAP Web AS instances and on the message server (preferably in the default profile only) so that HTTP load balancing works with SAP Web Dispatcher, all application servers use the same instance name, and the message server also observes the parameter. This parameter does not need to be set in the SAP Web Dispatcher profile.

See SAP Parameter Documentation for full SAP documentation for this profile parameter.