LCA location and work location is same but Client location is different

[anjaly]

My petitioner is Company 'A' and Client is 'B' however I am working for Client's client (B's Client) location .
My LCA location and work location is same is it legal ?
I am planing to go for stamping will it be a problem since client location and location mentioned in LCA is not same
(please note LCA location and Work location is same as Client's client (B's client) location)