I have a requirement of custom token to be in whole number only. For example, let the limit of token be 100 then it can be trade / transfer in terms of whole number like 1,2 ..etc. Is this possible ?
If you are going to build a custom wallet/interface for those tokens, you could interpret 0.0000001 as 1 unit. In that case you get indivisible tokens. Nevertheless, all other wallets will show fractions in balances that might be confusing for users.
No, there's no support for indivisible units in Stellar.