android - Admob ad request always return code 3 -


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i implement admob in 1 of android application. first time has banner add bellow of application. after adding banner ad in recylearview after 8 items problem occurs. 90% cases returns response code 3.

maximum time showing me:

i/ads: no fill ad server. w/ads: failed load ad: 3

here response code: 3 means the ad request successful, no ad returned due lack of ad inventory. other apps showing ads in same device.

notes:

  • it showing demo ad when test in testdevice
  • problem occurring non test devices
  • rare cases return ad.

can please me recover issue.is there issue in ad_unit or admob?


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