Issue with Changing Customer Posting Groups on Sales Orders

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Posted on by peter fun

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I am integrating customers and employees from another software into Business Central. In that external system, each customer (student or employee) can have multiple customer posting groups assigned.

In Business Central, I see that "Alternative Customer Posting Groups" can be defined under the main Customer Posting Group. However, when I try to change the customer posting group on a sales order, I can only change it once. For example:

The default posting group is A
I change it to B on the sales order — this works
But then I try to change it to C (which is also listed as an alternative in group A), and the system does not allow it

Even though group C is listed under the alternative posting groups, it is not accepted after the first change.

❓ My Question:

Is there a way to allow multiple changes to the customer posting group on the same sales order using alternative posting groups? Or is this just how Business Central works?

I need this flexibility for my integration to match the behavior of my other system, where multiple posting groups can be applied dynamically.

Categories:

Microsoft Dynamics RMS

Microsoft Dynamics NAV

Dynamics 365 Business Central

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Mansi Soni 8,909 Super User 2025 Season 2 on at

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Hello,

Have you tried with Allow Multiple Posting Group field on Sales and Receivables Setup? Kindly check this post:

https://learn.microsoft.com/en-us/dynamics365/release-plan/2023wave2/smb/dynamics365-business-central/use-different-general-ledger-accounts-payables-receivables?

https://yzhums.com/42522/

Hope this answer will give you some hint!

Regards,
Mansi Soni

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Ramesh Kumar 7,529 Super User 2025 Season 2 on at

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Changing customer posting group on Sales order is not recommended. Its greyed out by default on Sales order page but you can customize if you need that functionality

Thanks

Ramesh

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Andrés Arias 4,190 Super User 2025 Season 2 on at

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Hello,

I understand that you are receiving the following error message.

The issue, is that when receiving the different alternative groups, all the groups must be configured

In your example:

A- Alternative groups B and C
B - Alternative groups A and C
C - Alternative groups A and B

By performing this configuration, you will not get the error.

The alternative group is related to the customer posting group, not to the customer itself.

I hope I can help.

Regards,

Andres

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YUN ZHU 95,750 Super User 2025 Season 2 on at

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Although it is not recommended, you can try the following method.

Dynamics 365 Business Central: Can we skip/ignore field validation errors?

https://yzhums.com/44435/

Hope this can give you some hints as well.

Thanks.

ZHU

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Gerardo Rentería Ga... 25,384 Most Valuable Professional on at

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Hi, good day
I hope this can help you, and give you some hints.

2023 Wave 2 – v23: Feature Allow Multiple Customer and Vendor Posting Groups – Gerardo Rentería Blog

Best Regards
Gerardo

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