Why CriterionError.CANNOT_BID_MODIFY_CRITERION_TYPE on Keywords?

[Ken Dan Tinio]

I have this code that bid adjust on a specific keyword:

        *$adGroupCriterionService = $adWordsServices->get($session, 
AdGroupCriterionService::class);*
*        $operations = [];*

*        $keyword = new Keyword();*
*        $keyword->setId($criterionId);*
*        $keyword->setText('best science magazines');*
*        $keyword->setMatchType(KeywordMatchType::BROAD);*

*        $adGroupCriterion = new BiddableAdGroupCriterion();*
*        $adGroupCriterion->setAdGroupId($adGroupId);*
*        $adGroupCriterion->setCriterion($keyword);*
*        $adGroupCriterion->setBidModifier(1.5);*

*        // Create ad group criterion operation and add it to the list.*
*        $operation = new AdGroupCriterionOperation();*
*        $operation->setOperand($adGroupCriterion);*
*        $operation->setOperator(Operator::ADD);*
*        $operations[] = $operation;*

*        // Create the ad group criteria on the server and print out some 
information*
*        // for each created ad group criterion.*
*        // try {*
*            $result = $adGroupCriterionService->mutate($operations);*
*        // } catch (\Exception $e) {*
*        //     return array(*
*        //       "status"  => "fail",*
*        //       "message" => 'Caught exception: '.  $e->getMessage()*
*        //     );*
*        // }*

*        $adGroupCriterion = $result->getValue()[0];*

*        $data = array(*
*            "message" => "Keyword with ID %d has updated final URL ",*
*            "id"      => $adGroupCriterion->getCriterion()->getId()*
*        );*

*        array_push(self::$keywords, $data);*

The error is:

*<br />*
*<b>Fatal error</b>:  Uncaught 
Google\AdsApi\AdWords\v201806\cm\ApiException: 
[CriterionError.CANNOT_BID_MODIFY_CRITERION_TYPE @ 
operations[0].operand.bidModifier] in 
/Applications/MAMP/htdocs/native_adwords/vendor/googleads/googleads-php-lib/src/Google/AdsApi/Common/Util/Reflection.php:43*
*Stack trace:*
*#0 
/Applications/MAMP/htdocs/native_adwords/vendor/googleads/googleads-php-lib/src/Google/AdsApi/Common/Util/Reflection.php(43):
 
ReflectionClass-&gt;newInstanceArgs(Array)*
*#1 
/Applications/MAMP/htdocs/native_adwords/vendor/googleads/googleads-php-lib/src/Google/AdsApi/Common/AdsSoapClient.php(202):
 
Google\AdsApi\Common\Util\Reflection-&gt;createInstance('Google\\AdsApi\\A...', 
Array)*
*#2 
/Applications/MAMP/htdocs/native_adwords/vendor/googleads/googleads-php-lib/src/Google/AdsApi/Common/AdsSoapClient.php(164):
 
Google\AdsApi\Common\AdsSoapClient-&gt;parseApiExceptionFromSoapFault(Object(SoapFault))*
*#3 
/Applications/MAMP/htdocs/native_adwords/vendor/googleads/googleads-php-lib/src/Google/AdsApi/AdWords/v201806/cm/AdGroupCriterionService.php(198
 
in*
*<b>/Applications/MAMP/htdocs/native_adwords/vendor/googleads/googleads-php-lib/src/Google/AdsApi/Common/Util/Reflection.php</b>
 
on line*
*<b>43</b>*
*<br />*

-- 
-- 
=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~
Also find us on our blog:
https://googleadsdeveloper.blogspot.com/
=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~

You received this message because you are subscribed to the Google
Groups "AdWords API and Google Ads API Forum" group.
To post to this group, send email to adwords-api@googlegroups.com
To unsubscribe from this group, send email to
adwords-api+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/adwords-api?hl=en
--- 
You received this message because you are subscribed to the Google Groups 
"AdWords API and Google Ads API Forum" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to adwords-api+unsubscr...@googlegroups.com.
Visit this group at https://groups.google.com/group/adwords-api.
To view this discussion on the web visit 
https://groups.google.com/d/msgid/adwords-api/d64ca82b-4944-4855-bc63-568c0c893a1f%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.