> 1.8 | Errors and Messages

> The command result codes "+CME ERROR: <err>" and "+CMS ERROR: <err>" indicate errors related to mobile equipment or network functionality.
> The format of <err> can be either numeric or verbose and is selectable via AT+CMEE.
> A result error code terminates the execution of the command and prevents the execution of all remaining commands that may follow on the same command line. If so, neither "ERROR" nor "OK" result codes are returned for these commands. A 30 seconds timeout will deliver "ERROR" when the input of a command is not complete.
> Using the wrong command syntax may result in errors: For example, using the execute command syntax although the command has no execute format, causes "ERROR" to be returned. Likewise, using the write command syntax although the command has no write format causes "+CME ERROR: <err>" to be returned.
> See also:

> • | Section 2.12.1, CME/CMS Error Code Overview

> • | Section 2.5.1, Verbose and numeric result codes

> • | Section 3.4, AT+CEER