# Combining Identifier Strings

The identifier string is used for matching a combination of up to four strings from a factory management system or up to four scanner inputs that need to be combined into one string.

The plus and minus buttons manage how many strings that are combined. The following parameters are available:

Parameters for combining identifier strings
Parameter | Description
--- | ---
Name | The string must be given a name.
Length | The length of the string must be known and must be entered. This is important to be able to combine the correct string identifier.
Significant positions | The comma-separated positions or ranges (separated by hyphen) in the combined string that are used for matching.
Saved positions | The comma-separated positions or ranges in the strings that will be saved in the result.

The start and end parameters in each row define the individual string positions in the combined string identifier, that is used in the next step of the matching process.

The first part in the task selection process when using an identifier string as an input, is to define which positions in the string that are to be activated:

- Enter the significant positions, to define which positions in the identifier string that will be used for matching. The positions must be either comma-separated, or by range.