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I have an InfoPath Form which submits the text of a textbox and saves it in a SharePoint list. Whenever a user types in more than 255 characters and I want to edit the element in the SharePoint list (e.g. change the value of a custom field) an error appears that the textbox cannot contain more than 255 characters.

It's weird because initially the column can contain more than 255 characters but as soon as I want to edit the element, I get this error.

My question is: How can I turn off the limitation OR how can I display a character counter next to my InfoPath textbox?

Thanks for your help

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up vote 15 down vote accepted

YOu have to check the Allow unlimit length checkbox on the list column's properties page

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Thanks, that works fine if I create a new column. Unfortunately, I can't change the property for an existing column, is it possible to change it? – aydinch Jun 8 '11 at 14:22
are you sure you are in the list settings and the clicked the list column? Another thing is you might have enough permissions to do this – Colin Jun 8 '11 at 14:24
I think the setting cannot be changed on some default columns. On custom column types you should be able to change this setting even after creation. – Shihan Jul 6 '11 at 8:50
Thanks Colin it worked for me :) I was using a designer form with lots of dynamically created fields in it, was all working fine till today, still cant find out what happened suddenly. – user4686 Sep 7 '11 at 19:34
Very helpful answer, +1. One of the reasons I dislike SharePoint. – JᴀʏMᴇᴇ Jan 17 '13 at 17:01

Forget about InfoPath for a minute. Go directly into the SharePoint list settings and update the field properties. Take out the 255 limitation. Save your changes and then open a new InfoPath form and point it at the list. It will pick up all of your previous changes and as well, your field will not have this 255 length limitation.

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