Problem with top level function name between referenced models

Hello, I have a model I am dividing into different tasks to allow concurrent processing and I am getting the following error. I changed almost every name in the referenced models but I cannot eliminate the error. any ideas? "Potential conflicting usages of identifier 'ControllerInit': the name of a top level function for the model 'phm', and the name of a top level function for the model 'buffer'"

[Gautam]

Please share your sample model that can be used to analyse the issue.