# Parameter Placeholders

##### Tags:

- C/AL

##### Categories:

- Best Practice

The number of parameters passed to a string must match the placeholders.

Bad code

    CannotDeleteLineErr@1005 : TextConst 'ENU=You cannot delete this line because one or more rating values exists.';
    ...
    ERROR(CannotDeleteLineErr,TABLECAPTION);

Good code

    CannotDeleteLineErr@1005 : TextConst 'ENU=You cannot delete this line because one or more rating values exists.';
    ...
    ERROR(CannotDeleteLineErr);

Bad code

    CannotUseThisFieldErr@1020 : TextConst 'ENU=You cannot use this field for %2 fields.';
    ...
    ERROR(CannotUseThisFieldErr,0,Field.Class);

Good code

    CannotUseThisFieldErr@1020 : TextConst 'ENU=You cannot use this field for %1 fields.';
    ...
    ERROR(CannotUseThisFieldErr,Field.Class);

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Last modified February 24, 2022: Added tags & categories + cleanup (5ee04366) by waldo1001