Some custom site columns missing when attempting to add them to content type

Question

I have created several custom site columns that I use throughout the site - roughly 15 of them.  Many of them are attached to a site content type that I have created - call it content type A.  I created an additional site content type (content type B) which will share some of the same site columns.  However, when I go to add the existing custom site columns to content type B, I can only see a few of the custom columns I have previously created.  I thought at first that I might only be able to use custom columns with one content type, but that isn't the case because I do have the ability to add some of them.  Any ideas?  Thanks in advance.

Answer 1

Hi jackjohnson93,

have you ever add some comments in your XML file?, If you had did it, please remove it.

<elements xmlns="http://schemas.microsoft.com/sharepoint/">

  <!-- Parent ContentType: Item (0x01) -->

  <contenttype description="Mojo Item Content Type" group="Mojo Custom Content Types" id="0x01006e1d2ee8a874413dbe16d4ca2980cd0e" inherits="TRUE" name="SharePointProject1 - Item" version="0">

    <fieldrefs>

      <!-- Testing -->//Please remove comments

      <fieldref id="{36EFEDE7-3F78-4DB1-9A98-C94BF1E57133}" name="SessionName">

    </fieldref></fieldrefs>

  </contenttype>

</elements>

You can refer to the following link.

http://www.ascentium.com/content/site-columns-missing-your-content-types

Thanks,

Jack