ERROR:

[mairomaster]

No, it will be fine with the layout. This particular error (and many others) is only to signal to you that it might be dangerous in some cases.

[sneha.xeye]

is it create problem in the PCB layout if multiple input or output ports are not a real problem & we ignore this kind of errors?

[mairomaster]

Here it is explained how can you modify the settings about what should be flagged as warning/error?

http://techdocs.altium.com/display/ADRR/WorkspaceManager_Dlg-ProjectPropertiesPage_Matrix((Project+Options+-+Connection+Matrix))_AD

http://techdocs.altium.com/display/ADRR/WorkspaceManager_Dlg-ProjectPropertiesPage_ErrorLevels((Project+Options+-+Error+Reporting))_AD

You have to be careful would de-activating different options though - it might let some real problem through. Make sure that you understand each error and carefully check the schematics if it is a real problem or not. Another useful thing to do is to put "specific no error ERC" directives on particular nets that need to be excluded from the general check:

http://techdocs.altium.com/display/ADRR/Sch_Obj-NoERC((No+ERC))_AD

[sneha.xeye]

Hii...
i'm learning Altium designer.. while compiling my project it shows the error as below.. How can i remove this kind of errors?

[Error] :Net contains multiple Input Ports..