I added a dynamic grid section from a library, but some items are missing

This could happen if:

• The item in the library dynamic grid section exists in the study, but does not exist on the source form or section that is referenced in the dynamic grid section.
• The item in the library dynamic grid section is a top-level item, but is not a top-level item on the source form or section in the study.
• The item in the library dynamic grid section is a top-level item, but one or more of its conditional items does not exist on the source form or section in the study.
• The item in the library dynamic grid section has conditional items that do not match the study item's conditional items.

To prevent this issue, ensure that all items referenced in a dynamic grid section exist in the study before you add a library dynamic grid to the study.