Documents required for Green Card Processing

[raxpro]

Hello,

My current firm intends to process my Green Card and as part of the required documentation from previous employers - I have been told that there may be a requirement for "Experience Letters".

Here, my current company (I.e. company that will file for my Green Card) will provide "Experience Letter" alongside other required documentation. However, i have only 'Relieving Letters' from my previous employers and NOT the "Experience Letter".

Would this be a problem or "Experience Letter" from current company and "Relieving Letters" from my previous firms alongside other required documents be OK for the USCIS processing of the Green Card?

Thank You