rscp/transcribe/2/codepage is a SAP Parameter attribute which is used to control 2nd intermediate code page to handle transcription 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 .
A transcription can be activated using keyboard entry in connection with
other NLS settings of the basis. If the entry contains invalid
characters, the system attempts to propose replacement characters. The
help codepage specified in the parameter rscp/transcribe/1/codepage and
the help codepage also offered in this parameter help with this.
See SAP Parameter Documentation for full SAP documentation for this profile parameter.