Device mapping contains unexpected characters

Description

The I/O configuration of I/O signal arg is invalid.
An unexpected end or an unexpected character was found at position arg in the device mapping: arg.
The I/O signal has been rejected.

Recommended actions

Change the device mapping to conform to the following syntax:

• {bit} = ([0-9]+)
• {range} = ([0-9]+[-][0-9]+)
• {section} = ({bit} | {range})
• {device mapping} = ({section}[,])*{section}

Examples of valid device mappings:

• "1"
• "0-7, 15-8"
• "1,4-3,7"