AutoCAD P&ID

[#1]

good morning
to make the validation of the PID error I mark these lines,   always put the + (not connected). Delete the lines I restart and you're always the same, with the + and not with the dot indicating that this connected

Where is my mistake to draw?

best regards
joaquin

[#2 · Accepted solution]

Try moving/stretching the lines endpoint by osnap: "endpoint" to the offpage connectors node osnap:"Node".  This will connect the line to the off page connector.  When connecting one connector to another make sure you are connecting a "to" connector to a "from" connector.  You can tell which is which by the direction of flow on the line connected to the connector itself.

Hope this helps.