Group naming policy enabled tenant - Not allowing to create 'Teams' through provisioned jobs

SiddheshwarKohale , There are some strict guidelines that are to be followed when creating a group policy in azure active directory that enforces consistent naming conventions for  Microsoft 365 groups created or edited by your users, set up a group naming policy for your organizations in Azure Active Directory (Azure AD). 

I would suggest you to refer to your naming policies in your AAD and use the same to create a group using console job. As from your error it's clear that there is some format error in prefix and suffix. 

Please follow this article for more details.

Also check if the data is already filled in object in code before creating a team