I have created a Feed Importer and used XPath Parser for mapping. I have problem with updating a existing content. For example I have this xml structure.

  <title>Title 1</title>
  <title>Title 2</title>

I started importer and everything is OK. I set NID as unique and check "Update existing content" in Node Process settings. So when I run importer again whit the same data this nodes have updated again.

Why have been updated ? The source is the same and don't any difference. Should It display, there is no new content to add if I start importer again and again with the same data ?

Thank you!

1 Answer 1


it doesn't recognized the nid field as unique,

What is the field associated with the nid value?

If you have a custom field associated with the nid :

You should install https://www.drupal.org/project/field_validation

and add the validation of the field at http://yourwebsite/admin/structure/field_validation

and set the validator with the value "Unique values".

Sometimes a space in the value of the feed can cause this in this case you can use tamper for trim spaces : https://www.drupal.org/project/feeds_tamper

  • So this nid from srouce does not relation with Drupal. This is id from another system and I just use it for GUID and set as unique. I will try with feeds tamper first trim the value and second set unique for it. Sep 29, 2015 at 5:10
  • No it does not work. Create tamper for GUID (set trim and unique tamper). But every time when I run import the nodes are updating. Some times does not update. So if I run 5 times 4 of them will be updated 1 does not. This is so strange. Sep 29, 2015 at 9:19
  • What kind of field is GUID? text, number, others...? Sep 29, 2015 at 9:55
  • GUID is a number. <event id="27731">...</event>. This is my real data and I get @id for GUID. Sep 29, 2015 at 12:53
  • and what is it the type of field in your content type ( where do you store the id number) is text, integer, Long text? Sep 29, 2015 at 15:48

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