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@@ -185,6 +185,12 @@ The Accreditation status of measurements are managed by a boolean column with co
 
 </details>
 
+Especially during importing it is crucial to keep track of the present constraints in table. To simplify this task the following graphic should serve as support sheet.
+
+<details><summary>Impot_practise</summary>
+![Import_practise](uploads/1fb01b72ce2e1f95419e2ce8935612aa/Import_practise.png)
+</details>
+
 - Quality assessment workflow: As described below.
 
 ### Quality assessment workflow