Datasync error in Webi

Hello!

Could you please help with such a problem:

I have 2 Bex data sources:

I want to merge both queries in one report.

Step 1. I merge the dimensions: year1 to year2, acc1 to acc2, month1 to month2. So I've got 3 merged dims: Year, Month, Account

Step 2. I generate the table

X Axis: Date1 (Hierarchy from Q1), Month (Merged dim)

Y Axis: Accounts1 (Hierarchy from Q1), Account (Merged dim)

Body: Actual, Plan

And everything is OK.

Step 3. I replace Accounts1 (Hierarchy from Q1) by Accounts2 (Hierarchy from Q2)

So, I've got the following table:

X Axis: Date1 (Hierarchy from Q1), Month (Merged dim)

Y Axis: Accounts2 (Hierarchy from Q1), Account (Merged dim)

Body: Actual, Plan

Then there is an error #DATASYNC error in all the parts of the table

(Picture attached)

Thank you!