TT auto prints other state return with my Fed return when printing my CA state return. Do I need to include other state with CA return when filing or is this a TT error?

I’m filing my state (CA) return by mail and the cover page TT prints with the state (CA) return explains what is to be included - a copy of the Federal return, W2s, 1099s, etc. It does NOT mention anything about including a return from another state I file taxes in. However, TT automatically includes my other state return along with my Federal return when I print the (CA) state return. Does this mean I need to include the other state return with the Federal return when filing the (CA) state return or is this a mistake/error on TT’s part? In other words, should I remove it and only file the (CA) state return with a copy of the Federal return? Thank you.