Guild of Project Controls: Compendium | Roles | Assessment | Certifications | Membership

Tips on using this forum..

(1) Explain your problem, don't simply post "This isn't working". What were you doing when you faced the problem? What have you tried to resolve - did you look for a solution using "Search" ? Has it happened just once or several times?

(2) It's also good to get feedback when a solution is found, return to the original post to explain how it was resolved so that more people can also use the results.

Report to identify useless Dependencies

No replies
Rodney Jones
User offline. Last seen 4 weeks 3 days ago. Offline
Joined: 18 Jun 2012
Posts: 62
Groups: None

Hi P6ers! I hope 2024 is a great year for you.

 

Does anyone have a way of identifying if an activity has the same predecessor as SS and FF? Or more clearly, any report that identifies duplicated predecessors to another activity?

 

Thanks,

 

Rod

Jerome Odeh
User offline. Last seen 2 weeks 5 days ago. Offline
Joined: 19 Jan 2004
Posts: 102

Maybe the filter in the snippet below can help you in a way.

Unfortunately, it won't filter for only activities with duplicate same ID predecessors with SS AND FF logic but will filter for all activities with with SS OR FF predecessors logic. And you can then narrow down the duplicate ones.

Jerome Odeh
User offline. Last seen 2 weeks 5 days ago. Offline
Joined: 19 Jan 2004
Posts: 102

Maybe the filter in the snippet below can help you in a way.

Unfortunately, it won't filter for only activities with duplicate same ID predecessors with SS AND FF logic but will filter for all activities with with SS OR FF predecessors logic. And you can then narrow down the duplicate ones.

Rodel Marasigan
User offline. Last seen 2 days 12 hours ago. Offline
Joined: 25 Oct 2006
Posts: 1699

Export the activity relationship to Excel. Combine the Predecessor and Successor columns using the "&" symbol or the CONCATENATE Excel function. Use the COUNT formula to identify combined columns with a count greater than 1, then apply a filter for counts greater than 1.

Rafael Davila
User offline. Last seen 3 hours 24 min ago. Offline
Joined: 1 Mar 2004
Posts: 5229

Does anyone have a way of identifying if an activity has the same predecessor as SS and FF? Or more clearly, any report that identifies duplicated predecessors to another activity?

If using Spider Project to filter out multiple links to same activities:
1 Go to Links Table and Export to Excel. Format as a Table.
2 In Excel add a column to concatenate predecessor and successor activity codes.
3 Then add a column to identify duplicates.
4 Filter and done.

Hoover thumbnails and click zoom.

Links-Table  Links table

Export-Links Excel Workbook

Filtered-Links Apply Filter

  • Please be reminded two links to same predecessor does not mean useless or redundant, SS and FF links to same predecessor are useful.
  • If modeling point ot point relationships you can have multiple SS relationships (between two activities) with double lags, multiple links, none redundant.
  • The multiple links might have different lag calendars, in such case they are not redundant.

Report to identify useless Dependencies:

On the other hand redundant dependencies make schedule logic hard to follow and can lead to errors. If you use P6 and want to remove redundant activities the following links might be of interest.

Project XER - Tool "RRR" Remove Redundant Relationships

Logic League by Ron Winter Consulting LLC.

Best Regards, Rafael

david kelly
User offline. Last seen 7 hours 14 min ago. Offline
Joined: 12 Feb 2016
Posts: 33
Groups: None
Deltek Fuse removes redundunt dependencies. Pricey.