SharePoint column limits. Choice column

sharepoint.stackexchange https://sharepoint.stackexchange.com/questions/277222

Question

Could you please explain me about SharePoint Column limits.

I read several articles about limitation of choice column. For example here and here.

From MS Article: Choice field maximum value : 255 & size of column: 30 bytes

Choice (multiple selection) field maximum value: 350 & size of column: 22 bytes

My question is:

Why I am able to add 10 options for choice column and not faced any limitation issues? Each option contains 50 characters.

And what does it mean 30 bytes? My Choice column contains 10*50 characters. 500char = 500bytes.

Is official or ShareGate information correct and up to date?

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Solution

First of all, you should be aware of list row size limit is 8,000 bytes per row,

  • 300 bytes are reserved.
  • 7700 bytes for end-user columns.

It's a boundary limit that can't be changed!

For more details, check SharePoint 2019 Limitations compared to other SharePoint versions.

Secondly, this info is correct " the maximum columns for Choice (multiple selections) are 350 and its size should be 22 bytes.

BUT, it's the Threshold Limit Type that can be exceeded,

Note: 350 * 22 = 7700 that is the Boundary Row Limit size for end-user columns.

Read more about Threshold vs Boundary vs Supported Limit.

Therefore, you will be able to add a choice field with 500 bytes without any limitation issue UNTIL you reach the Boundary Row Limit size that is 7700 bytes for end-user columns.

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