API concerned : get /rest/v1/activities.json ( Get Lead Activities) Implementation Notes Returns a list of activities from after a datetime given by the nextPageToken parameter. Also allows for filtering by lead static list membership, or by a list of up to 30 lead ids. Required Permissions: Read-Only Activity, Read-Write Activity) Strange Behaviour description I receive erratic results, when I am  asking this API in the following conditions: - generated access-token up to date - fixed leadIDs ( just one integer passed as value to this parameter ) - fixed activityTypeIds ( just one integer passed as value to this parameter ) - fixed batchSize fixed to 300 - Iterative requests are placed on a 6 month period -with 1 month hops- in varying the "sinceDateTime" before generating a nextPageToken. 1a) Initial sinceDateTime = 2019-01-01T00:00:00-00:00 2a) to the get /rest/v1/activities/pagingtoken.json in order to get a first valid nextPageToken with 'sinceDatetime' set 3a) to the: get /rest/v1/activities.json ( Get Lead Activities), each time  using the returned 'nextPageToken' to get the next bunch of values results --> from 2019-01-xx to 2019-03-xx (..b..)  next sinceDateTime = 2019-02-01T00:00:00-00:00 as (1b), followed by (2b, 3b) steps results --> from 2019-02-xx to 2019-03-xx (..c..)  next sinceDateTime = 2019-03-01T00:00:00-00:00 as (1c), followed by (2c, 3c) steps results --> from 2019-03-xx to 2019-04-xx (..d..)  next sinceDateTime = 2019-04-01T00:00:00-00:00 as (1d), followed by (2d, 3d) steps results --> from 2019-04-xx to 2019-04-xx (..e..)  next sinceDateTime = 2019-05-01T00:00:00-00:00 as (1e), followed by (2e, 3e) steps results --> from 2019-05-xx to 2019-05-xx (..f..)  next sinceDateTime = 2019-06-01T00:00:00-00:00 as (1f), followed by (2f, 3f) steps results --> from 2019-06-xx to 2019-06-xx Question: since the documentation (se below implementation note) refers only to a temporal "start marker", why do this API returns data in a period range where the "stop markers" are different ? Is there any special issue to specify it ? Pascal ... View more