Hello Ramji
your set up is "wrong"., therefore you will not get a solution.
a.) SAP EHS SVT can take care regarding MM, SD, PP
b.) SAP GTS can only take care regarding MM, SD
The SVT process should be designed in SVT only. Only under some conditions it make sense to link with SAP GTS (and this is clearly possible),
To make it short: for volume tracking GTS is the "wrong" solution. This "depreciation" functionality in GTS can only work if you have one component. This is not really the case in real life.
Please check this document: Substance Volume Tracking using SAP EHS MANAGEMENT
There is a good discussion running here how to integrate SAP EHS SVT and SAP GTS in "principle"
C.B.
PS: for your topics:
"What stage volume tracking is happening , when I create a purchase order at that point of time whether tracking happens
If that tracking happens, whether it will get updated in table CCRCT_CO . Also, Is it possible to transfer volume tracked into GTS"
The SVT table to look at depends on the "context". CCRCT_CO is used in production. Therefore no integration with GTS possible as GTS does have not link to SAP ERP in this context
Generally. EHS SVT is set up like. you have one job running in the "night" to collect the numbers and to calculate, This is done independent of SAP GTS; many companies do not have SAP GTS; therefore they need a SVT solution
No, you can not transfer data back in SAP standard from SAP SVT to SAP GTS; and that this the "wrong" approach (why will transfer teh volumes? all teh needed e.g. REACH like logic is still in SVT)