How to Increase field length

[carlocsa]

Hi ServiceNow Gurus,

I have a Service Portal form that contains a single line text field. The length of the field is the default value (40). How can I increase the max length of this field  to say 75 or 100?

Thank you very much.

Carlo

[Bhagya Lakshmi · Accepted solution]

Hi,

You can increase max length of  field in respected table dictionary.

[Archit Desai1]

Hello carlocsa,

If you want to increase the Max Length for the specific field, you can do that through dictionary modifications for the field. Moreover kindly go through below information which will help you understand the behaviour of the text fields in serviceNow :

It is important to understand the difference is between a single-line text field and a multi-line text field in ServiceNow. It’s obvious when you look at them, but there are some details under the hood that you might not know about. The driver of these differences is the ‘Max Length’ value that you set on the dictionary entry for the string field. Any string field with a max length value less than or equal to 255 will be rendered as a single-line text field. As soon as you hit 256 or more characters for the max length, the field is changed to a multi-line text field.

At the database level a field with a max length value less than or equal to 255 is designated as a ‘CHAR’ datatype in the database. The DB won’t accept a max length greater than what you specify for these fields.

The max length for multi line field is 4000 characters however you can increase it to more with un-noticed impact on performance.

regards,

Archit