This error occurs when the number of created cursors has reached the maximum limit, which violates Kintone’s restrictions. For details on the restrictions, please refer to the notice from Cybozu: The upper limit restriction on the offset for the Kintone API bulk record retrieval. This article is available only in Japanese. This restriction is a limitation of Kintone, so it cannot be avoided.
Customization using Customine often causes this error when many records are retrieved or updated in frequently displayed list views or where many record operations occur in apps accessed by numerous users. We recommend avoiding the creation of these customizations.
Please check here for specific impact areas and here for restrictions other than the cursor API.