{"id":39440,"date":"2017-08-03t07:22:23","date_gmt":"2017-08-03t11:22:23","guid":{"rendered":"\/\/www.deco-dalles.com\/?p=39440"},"modified":"2019-10-18t12:21:35","modified_gmt":"2019-10-18t16:21:35","slug":"find-out-of-sequence-activities-primavera-p6","status":"publish","type":"post","link":"\/\/www.deco-dalles.com\/find-out-of-sequence-activities-primavera-p6\/","title":{"rendered":"how to find out-of-sequence activities in primavera p6 professional"},"content":{"rendered":"

have you ever had a primavera p6 situation where all predecessors of an activity<\/a> are 100% complete but the activity\u2019s start<\/strong> date isn’t pushed to the data date<\/strong> as expected? similarly, you might also see the activity’s\u00a0finish<\/strong> date is much later than the it’s remaining duration from data date<\/strong>? if you answered yes then this quick tip<\/a> might help you find the offending activity cause these problems.<\/p>\n

the problem<\/h3>\n

to illustrate this problem with out-of-sequence activities in primavera p6, let\u2019s have a look at this schedule with data date of 02-aug-16.<\/p>\n

\"out-of-sequence<\/p>\n

there are 2 activities with unexpected dates, dummy activity 05<\/strong> and dummy activity 06<\/strong>, so let\u2019s investigate further. if i select dummy activity 05<\/strong> and have a look at the predecessors of this activity in the details form<\/strong>, it clearly shows that all the predecessors to dummy activity 05<\/strong> are completed, therefore one would expect dummy activity 05<\/strong> to have a start date of 02-aug-16 and not 09-aug-16.<\/p>\n

\"out-of-sequence<\/p>\n

following same steps, dummy activity 06<\/strong> should have a finish<\/strong> date of 15-aug-16 and not 22-aug-16 since all its predecessors are also completed.<\/p>\n

\"out-of-sequence<\/p>\n

these 2 scenarios normally prompts the question; “why are the dates not as expected”?<\/p>\n

the simple answer is that these activities were executed in an order different than the order we had planned (called out-of-sequence progressing<\/a>). at the same time, we’re using a scheduling setting in primavera p6 called retained logic. retained logic <\/strong>handles how primavera p6 will schedule<\/a> progressed activities and in the case where activities are progressed out-of-sequence, p6 will ensure the schedule still retains the original logic between activities.<\/p>\n

the solution<\/h3>\n

a way to trace the activity or activities currently driving the dates of dummy activity 05<\/strong> and dummy activity 06<\/strong> is to add 2 fields to the predecessors<\/strong> section of the relationships<\/strong> tab of the details form: early start<\/strong> and early finish<\/strong>.<\/p>\n

all activities that are 100% complete should have early start<\/strong> and early finish<\/strong> dates on same date as the data date<\/strong>, therefore any completed predecessor with early start<\/strong> and\/or early finish<\/strong> dates other than the data date<\/strong> is the offending activity causing dummy activity 05<\/strong> and dummy activity 06<\/strong> to display wrong dates.<\/p>\n

\"out-of-sequence<\/p>\n

from image above, dummy activity 04<\/strong> has early start<\/strong> and early finish<\/strong> dates of 08-aug-16 despite been 100% complete<\/strong>, therefore pushing the start<\/strong> date of dummy activity 05<\/strong> to 09-aug-16.<\/p>\n

if we check dummy activity 04<\/strong>, we will notice that its predecessor, dummy activity 01<\/strong>, is still in progress with an early finish<\/strong> date of 08-aug-16 and it is this date that has been cascaded to dummy activity 05<\/strong> based on retained logic<\/strong> setting.<\/p>\n

\"out-of-sequence<\/p>\n

now that i have found the offending out-of-sequence activity.<\/p>\n

changing the relationship logic<\/a> between dummy activity 01<\/strong> (which is still in progress) and dummy activity 04<\/strong> (which is 100% complete) from fs<\/strong> to ss<\/strong> should solve the problem as shown in the figures below.<\/p>\n

\"out-of-sequence<\/p>\n

\"out-of-sequence<\/p>\n

the start date of dummy activity 05<\/strong> is now 02-aug-16 as expected and also the finish<\/strong> date of dummy activity 06<\/strong> is also now 15-aug-16 as expected. similarly the early start<\/strong> and early finish<\/strong> dates of all the completed predecessors are now 02-aug-16 as expected.<\/p>\n

conclusion<\/h3>\n

i know that after tracing the out-of-sequence activity, i then changed the relationship type from finish-to-start<\/strong> to start-to-start. <\/strong>but before you follow suit, it is best you do the following:<\/p>\n

    \n
  1. check that the project\u2019s planning procedure<\/a> to see if your specification allows changing of activities relationship logic post-baseline.<\/li>\n
  2. check with the project engineers<\/a> to find out what the revised relationships for the out-of-sequence activities should be.<\/li>\n<\/ol>\n

    finally, i hope you have found this quick tip useful and as always i would welcome your comments below. what do you think?<\/p>\n","protected":false},"excerpt":{"rendered":"

    have you ever had a primavera p6 situation where all predecessors of an activity are 100% complete but the activity\u2019s…<\/p>\n","protected":false},"author":279,"featured_media":39450,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"content-type":"","_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"footnotes":""},"categories":[55],"tags":[],"content-topics":[],"class_list":["post-39440","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-primavera-p6-tutorials"],"acf":[],"yoast_head":"\nhow to find out-of-sequence activities in primavera p6 professional<\/title>\n<meta name=\"description\" content=\"out of sequence activities: are your predecessors of 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