Showing results for 
Search instead for 
Did you mean: 

Problem matching two sets of lists !


Slowly getting an app together - however brain has stopped on this one.

All references are from sharepoint lists - I do not use lookups as imported from Azure.

I have a list that holds lookup IDs for Quotations, Clients and Contacts.The list is called People ( don't ask !)

I have a screen that shows all contacts connected to a single client connected to a single quotation. - a collection CContacts

Each contact has a client ID in its record as no contacts work for more than one client.

I want to display a gallery with all contacts that are connected to a client but who are not connected to a quotation.

So I can get a list of Contactids for the client, ID1,ID4,ID6,ID8 call it clientcontact

I can get a list of all contactids in the People list with matching quotation ID and Client ID. say ContactID 1,ID6 - from the CContacts collection

How do I get a collection that will hold contacts IDs 4 and 8. 

I can get the in function to work on one clientcontactID in CContacts (Contact column) but I can't see how to run a for all on   as it says in the help that this will not run on a collection

All ideas gratefully received








Community Support
Community Support

Hi rlmckean,


I am not clearly with your scenario.


Could you give me more clarification?


Best regards,
Mabel Mao

Community Support Team _ Mabel Mao
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

Hi Mabel -

Just going out - will rfeply later thanks



Hi again Mabel

so its like this.
I have a quotation list that gets filtered into a collection 'quotes' for all quotations for an enquiry -
(we quote to different clients for the same enquiry). The 'quote' s collection holds the enquiry ID (quoteno), same for all rows in the collection, and clientid , different for each row in the collection.
Each client has contacts attached to it by utilising a field in the Contacts list in a column which holds the clientid.
Not all client's contacts are attached to each quotation so there is a 'matching' list 'People' . Each row in People holds a quoteno, clientid,contactid.
The schema is like this
Enquiry     Quotes     Clients     Contacts       People
Quoteno   Quoteno    Clientid      ContactID      Quoteno
                 Clientid                       Clientid          Clientid


When a user wants to attach the first contact to the Enquiry, A collection CContacts filters the Contact list by Clientid , the clientid coming from the Quotes list. When a contact is selected from the gallery , a record is patched to People with relevqant three IDs 


When a user wants to view the contacts attached to a quotation, list 'People' is filtered by ( quoteno and clientid) into a collection Qcontacts . This loads a gallery with the attached contactids and data .


The problem I have then is when a user wants to link a second contact, I have to have a further collection that will filter only those contact IDs from the CContact collection that are NOT contained within the collection Qcontacts. ie Client contacts that exist but that are not allocated to the quote.

This is where I hit a wall in in understanding the Forall etc. In Access, I would run a for each..endfor or a do while endo construct. I have messed around with the countrow function etc but not got anywhere

I am sure you will have an easy solution I have missed - have a good weekend



Hi MAbel

I have narrowed this down now to this. 

If I set Items in a gallery to this

Filter(CContact,COID in Cpeople.Contact)

I list the contacts in the contact list that are listed in the People collection

What i need is this 

Filter(CContact,COID NOT in Cpeople.Contact)

which lists the contacts exisiting for a client that are not in the people collection - and it does not like it !!!

Is there a way around this ??





Me again Mabel

Worked it out down the washing up !

Filter(CContact,!(COID  in Cpeople.Contact)) works just fine !

Apologies foir taking up your time reading all this - but writing it down concentrates the old mind and hence - sometimes- solved the problem itself !!






Hi rlmckean, I am so glad to hear that you have figured out a solution for this issue. Anytime you got issues when working with Powerapps, please feel free post your issues here, we are always ready to help. Best regatds, Mabel Mao
Community Support Team _ Mabel Mao
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

Helpful resources


Community will be READ ONLY July 16th, 5p PDT -July 22nd

Dear Community Members,   We'd like to let you know of an upcoming change to the community platform: starting July 16th, the platform will transition to a READ ONLY mode until July 22nd.   During this period, members will not be able to Kudo, Comment, or Reply to any posts.   On July 22nd, please be on the lookout for a message sent to the email address registered on your community profile. This email is crucial as it will contain your unique code and link to register for the new platform encompassing all of the communities.   What to Expect in the New Community: A more unified experience where all products, including Power Apps, Power Automate, Copilot Studio, and Power Pages, will be accessible from one community.Community Blogs that you can syndicate and link to for automatic updates. We appreciate your understanding and cooperation during this transition. Stay tuned for the exciting new features and a seamless community experience ahead!

Summer of Solutions | Week 4 Results | Winners will be posted on July 24th

We are excited to announce the Summer of Solutions Challenge!   This challenge is kicking off on Monday, June 17th and will run for (4) weeks.  The challenge is open to all Power Platform (Power Apps, Power Automate, Copilot Studio & Power Pages) community members. We invite you to participate in a quest to provide solutions in the Forums to as many questions as you can. Answers can be provided in all the communities.    Entry Period: This Challenge will consist of four weekly Entry Periods as follows (each an “Entry Period”)   - 12:00 a.m. PT on June 17, 2024 – 11:59 p.m. PT on June 23, 2024 - 12:00 a.m. PT on June 24, 2024 – 11:59 p.m. PT on June 30, 2024 - 12:00 a.m. PT on July 1, 2024 – 11:59 p.m. PT on July 7, 2024 - 12:00 a.m. PT on July 8, 2024 – 11:59 p.m. PT on July 14, 2024   Entries will be eligible for the Entry Period in which they are received and will not carryover to subsequent weekly entry periods.  You must enter into each weekly Entry Period separately.   How to Enter: We invite you to participate in a quest to provide "Accepted Solutions" to as many questions as you can. Answers can be provided in all the communities. Users must provide a solution which can be an “Accepted Solution” in the Forums in all of the communities and there are no limits to the number of “Accepted Solutions” that a member can provide for entries in this challenge, but each entry must be substantially unique and different.    Winner Selection and Prizes: At the end of each week, we will list the top ten (10) Community users which will consist of: 5 Community Members & 5 Super Users and they will advance to the final drawing. We will post each week in the News & Announcements the top 10 Solution providers.  At the end of the challenge, we will add all of the top 10 weekly names and enter them into a random drawing.  Then we will randomly select ten (10) winners (5 Community Members & 5 Super Users) from among all eligible entrants received across all weekly Entry Periods to receive the prize listed below. If a winner declines, we will draw again at random for the next winner.  A user will only be able to win once overall. If they are drawn multiple times, another user will be drawn at random.  Individuals will be contacted before the announcement with the opportunity to claim or deny the prize.  Once all of the winners have been notified, we will post in the News & Announcements of each community with the list of winners.   Each winner will receive one (1) Pass to the Power Platform Conference in Las Vegas, Sep. 18-20, 2024 ($1800 value). NOTE: Prize is for conference attendance only and any other costs such as airfare, lodging, transportation, and food are the sole responsibility of the winner. Tickets are not transferable to any other party or to next year’s event.   ** PLEASE SEE THE ATTACHED RULES for this CHALLENGE**   Week 1 Results: Congratulations to the Week 1 qualifiers, you are being entered in the random drawing that will take place at the end of the challenge. Community MembersNumber of SolutionsSuper UsersNumber of Solutions @anandm08  23 @WarrenBelz  31 @DBO_DV  10 @Amik  19 AmínAA 6 @mmbr1606  12 @rzuber  4 @happyume  7 @Giraldoj  3@ANB 6 (tie)   @SpongYe  6 (tie)     Week 2 Results: Congratulations to the Week 2 qualifiers, you are being entered in the random drawing that will take place at the end of the challenge. Community MembersSolutionsSuper UsersSolutions @anandm08  10@WarrenBelz 25 @DBO_DV  6@mmbr1606 14 @AmínAA 4 @Amik  12 @royg  3 @ANB  10 @AllanDeCastro  2 @SunilPashikanti  5 @Michaelfp  2 @FLMike  5 @eduardo_izzo  2   Meekou 2   @rzuber  2   @Velegandla  2     @PowerPlatform-P  2   @Micaiah  2     Week 3 Results: Congratulations to the Week 3 qualifiers, you are being entered in the random drawing that will take place at the end of the challenge.   Week 3:Community MembersSolutionsSuper UsersSolutionsPower Apps anandm0861WarrenBelz86DBO_DV25Amik66Michaelfp13mmbr160647Giraldoj13FLMike31AmínAA13SpongYe27     Week 4 Results: Congratulations to the Week 4 qualifiers, you are being entered in the random drawing that will take place at the end of the challenge.   Week 4:Community MembersSolutionsSuper UsersSolutionsPower Apps DBO-DV21WarranBelz26Giraldoj7mmbr160618Muzammmil_0695067Amik14samfawzi_acml6FLMike12tzuber6ANB8   SunilPashikanti8

Check Out | 2024 Release Wave 2 Plans for Microsoft Dynamics 365 and Microsoft Power Platform

On July 16, 2024, we published the 2024 release wave 2 plans for Microsoft Dynamics 365 and Microsoft Power Platform. These plans are a compilation of the new capabilities planned to be released between October 2024 to March 2025. This release introduces a wealth of new features designed to enhance customer understanding and improve overall user experience, showcasing our dedication to driving digital transformation for our customers and partners.    The upcoming wave is centered around utilizing advanced AI and Microsoft Copilot technologies to enhance user productivity and streamline operations across diverse business applications. These enhancements include intelligent automation, AI-powered insights, and immersive user experiences that are designed to break down barriers between data, insights, and individuals. Watch a summary of the release highlights.    Discover the latest features that empower organizations to operate more efficiently and adaptively. From AI-driven sales insights and customer service enhancements to predictive analytics in supply chain management and autonomous financial processes, the new capabilities enable businesses to proactively address challenges and capitalize on opportunities.    

Updates to Transitions in the Power Platform Communities

We're embarking on a journey to enhance your experience by transitioning to a new community platform. Our team has been diligently working to create a fresh community site, leveraging the very Dynamics 365 and Power Platform tools our community advocates for.  We started this journey with transitioning Copilot Studio forums and blogs in June. The move marks the beginning of a new chapter, and we're eager for you to be a part of it. The rest of the Power Platform product sites will be moving over this summer.   Stay tuned for more updates as we get closer to the launch. We can't wait to welcome you to our new community space, designed with you in mind. Let's connect, learn, and grow together.   Here's to new beginnings and endless possibilities!   If you have any questions, observations or concerns throughout this process please go to   To stay up to date on the latest details of this migration and other important Community updates subscribe to our News and Announcements forums: Copilot Studio, Power Apps, Power Automate, Power Pages

Top Solution Authors
Top Kudoed Authors
Users online (2,482)