Integration of Quotation Data of CRM System application with ERPNext Quotation

ERPNext
1

Hi team ,

Problem Statement:-
There are 2 Application namely CRM system application and ERPNext Application.
CRM System may be Oracle, SAP, etc . Whenever we create a quotation data in CRM system then automatically the same quotation should we created in ERPNext.
How we can achieve this in ERPNext ?