i wanted to know how important the relieving letter is. will the payslips and offer letter do
Should be enough. Don't see a reason why anybody should have a problem as long as the payslips and/or offer letters establish the date of joining and the date of relieving.
However, let me share a personal experience with you in this regard. This was during my interviews at various B schools last year. The name of the B school shall remain undisclosed because it will make the situation and myself sound more important
I carried my offer letter and the most recent month's payslip to the interview for verification. Did not carry my first payslip along for two reasons:
1. I thought it wouldn't be required since the offer letter explicitly mentions the date of joining
2. I had misplaced it
The person verifying the document enquired about the payslip to which I cooked some suitable globe and drew his attention to the joining date on the offer letter. To this, that remarkably intelligent character calmly contended that the date of joining on the offer letter need not necessarily be the date I actually joined the company.
After trying to reason out the obvious fallacies of this argument with him for a while, I gave up. He said he wouldn't be able to consider my work ex for the purpose of further evaluation of my candidature, to which I, in slighltly subtler terms, told him to buzz off.
The point is, you never know what kind of people you come up against. So my advice is, whatever has been mentioned in that 'required documents' list of yours, just bring them along. If the company doesn't issue it, get your superior to write one to similar effect and sign it himself. But do bring it along. No point in trying your luck in these matters