If your organization creates sales orders which use variant configuration, the change outlined in this forum topic may be relevant to you. This change should be of particular interest to any customers who have copied sales orders to a target client and then tried to change the data but end up encountering this error:
"Internal error in communication between configuration and sales doc. GET_CONFIG_MODE".
UPDATED March 29, 2016: Our team has recently worked with other customers who have Configuration data assigned to Production Orders, Purchase Requisitions, and Planned Orders. Having learned this, we have updated our standard configuration accordingly and have updated this posting to include these details here. Freely apply any or all of these config changes as are relevant to your system.

SALES ORDER CONFIGURATION
1. In your source system – typically Production – go into the Data Echo Framework and locate data type LINK - SALES ORDER ITEMS
2. Select the data type to open the underlying maintenance views and select ‘Linkages’
3. Add a new link to recipient data type CA - INSTALLED BASE; use the linkage details that can be viewed in this screen capture
Note: This change may now leave you with an active link to both CA - INSTALLED BASE and SD - INSTALLED BASE, and we suggest that you delete the link to SD - INSTALLED BASE. If you don’t want to delete the link to this data type you should at least set it as inactive as it otherwise will create an unnecessary redundancy. Although CA - INSTALLED BASE and SD - INSTALLED BASE were similar at one point, we are now only using CA - INSTALLED BASE within our configuration and have subsequently deleted SD - INSTALLED BASE from our configuration altogether.

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PRODUCTION ORDERS CONFIGURATION
1. In your source system – typically Production – go into the Data Echo Framework and create a new data type named LINK - PROD ORDR TO INSTALL BASE using the details in this screen capture

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2. Select this new data type to open the underlying maintenance views and select ‘Linkages’
3. Add a new link to recipient data type CA - INSTALLED BASE using the linkage details that can be viewed in this screen capture

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4. Select data type PP - PRODUCTION ORDERS to open the underlying maintenance views and select ‘Linkages’5. Add a new link to recipient data type LINK - PROD ORDR TO INSTALL BASE using the linkage details that can be viewed in this screen capture

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PURCHASE REQUISITIONS CONFIGURATION
1. In your source system – typically Production – go into the Data Echo Framework and select data type MM - PURCHASING REQUISITIONS to open the underlying maintenance views and select ‘Linkages’
2. Add a new link to recipient data type CA - INSTALLED BASE using the linkage details that can be viewed in this screen capture

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3. You may choose to repeat this process for data type MM - PURCHASE REQS W/PURCH DOCS
PLANNED ORDERS CONFIGURATION
1. In your source system – typically Production – go into the Data Echo Framework and select data type MM - PURCHASING REQUISITIONS to open the underlying maintenance views and select ‘Linkages’
2. Add a new link to recipient data type CA - INSTALLED BASE using the linkage details that can be viewed in this screen capture

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