Sorry to break the news here, apologizing in advance, I am only sharing past experience not necessarily would happen to all though.
SAP courses are provided by many institutes, they usually conduct such courses for minimum 2-3 mths duration. They do not guarantee jobs because today's SAP market in India for freshers is diminished. All SAP jobs are available for project management, implementation or consultation level. Even end user jobs require minimum 2 years of experience in SAP. In such case, many institutes offer fake experience certificates to their students so that they can easily enter the SAP market on a consultant role.
Not sure about other ERP fields that you have mentioned. I am only sharing information related to Delhi/Noida/Gurgaon SAP HR market (end user and consultation jobs) as I remember how me and my batch suffered for lack of SAP jobs for freshers.
All the best to you. Have a great year ahead.
Thanks and Regards,
18th March 2019 From India, Delhi