Dear BO experts,
I am using BO 4.2 and I know that there are several Placeholders to be used in Scheduling:
%SI_STARTTIME%, %SI_OWNER%, etc
Do you know where in the CMC are defined these Placeholders?
Thanksssss
Victor_BCN 
(BOB member since 2009-09-15)
They aren’t defined that way. They simply represent the names of properties of the scheduled instance that can be used as placeholders.
If you query for a scheduled instance using Query Builder, you will see all of the properties associated with it. Any of them (except property bags) can be used as placeholders.
Joe
joepeters 
(BOB member since 2002-08-29)
Hi, thanks for your answer.
My final goal is to create “new placeholders”
Is this possible in BO 4.2?
Thankssss
Victor_BCN (BOB member since 2009-09-15)
No, but there are a few existing enhancement requests for additional functionality:
https://influence.sap.com/sap/ino/#/idea/111218
https://influence.sap.com/sap/ino/#/idea/128394
https://influence.sap.com/sap/ino/#/idea/127004
https://influence.sap.com/sap/ino/#/idea/107670
https://influence.sap.com/sap/ino/#/idea/141729
https://influence.sap.com/sap/ino/#/idea/224627
https://influence.sap.com/sap/ino/#/idea/101747
https://influence.sap.com/sap/ino/#/idea/10372
These all pertain to dates:
https://influence.sap.com/sap/ino/#/idea/120480
https://influence.sap.com/sap/ino/#/idea/105170
https://influence.sap.com/sap/ino/#/idea/109323
https://influence.sap.com/sap/ino/#/idea/200986
https://influence.sap.com/sap/ino/#/idea/140501
https://influence.sap.com/sap/ino/#/idea/145093
joepeters (BOB member since 2002-08-29)
Hello,
I found this SAP Note https://launchpad.support.sap.com/#/notes/1449399
Im gonna have a look, there might be a chance 
Victor_BCN (BOB member since 2009-09-15)
Different placeholders. Those are used for server settings, ex. %DefaultInputFRSDir%.
joepeters (BOB member since 2002-08-29)