I encourage you to bring more details and context to your initial post. For example, screenshots are useful to better understand what you are trying to do and will also increase your chance to receive meaningful help from other Community members.
Here is, what I am trying to achieve, I have various STEP files having ENGINE CAD models in .asm format. Let say crankshaft, piston, ring, cylinder etc. Now how to merge these multiple STEP files having .asm into single .asm in STEP format.
One of the premises of the API is that if an operation can be performed from the User Interface then it is likely achievable from the API.
Consequently the question you need to answer is : what do you need to do from the UI perspective. From that you will know whether / how to do it from the API perspective.
So you mean to say, if my client is able to import all the STEP files successfully in Creo then I should be able to able to merge those individual STEP files too using API right ?
It's likely. Does not mean that one function exists to perform it all in one call though. Simply that Creo Toolkit functions reflect Creo Parametric existing UI commands.
The statement is not reversible though: because it can be performed from the UI does not necessarily mean that it is doable from the API.
