tcode WE19, choose an existing IDOC in the system:

Just change the existing IDOC Service Order ID to a new one.
Old value: 8000000011

New value: 9000000011
Click button "Inbound Function Module",

callstack:

Once done, a new IDOC is generated:

The manually specified service Order ID is contained in this new IDOC:

要获取更多Jerry的原创文章，请关注公众号"汪子熙":