If you know the name of the customer export function module, how can you find out which customer exports it?

In our actual development, we sometimes encounter this problem: by searching through the network, we find the name of a function module exported by the customer, such as exit_saplmgnk_003, but I don't know which customer outlet component it is. How can we find the customer outlet to which it belongs? The following is a stupid method I have found for your reference.
1. Use the transaction code Se37 , Open the function editor and go "Function module name )" Enter this function module Exit_saplmgnk_003 And then click "Display )" Button to go to the function module maintenance screen.
2. By default "Source code(Source Code )" Tab, we need to switch "Attribute" Tab, and then see "General Data" Inside "Development" In our example MGW .
3. Use the transaction code Smod , Enable sap enhanced management "Enhancements )" Column, select Value help (F4 help, or press the select button next to the input box) , Open "Knowledge Base Information System: Repository info system: Find Exit )" Window, in "Development class )" Enter the development class found above MGW And then click "Execution (excute )" Button to query the customer exits in the development category.
4. In our example, we can find the mgw00001 and Mgw00002 These two exits. Next, we can find the function module we found in the two exits. Exit_saplmgnk_003 Now, we found that it is at the exit. Mgw00002 .