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Mod10Rec ( num ; result ; loop )

Returns the checksum with the Modulo 10 recursive method

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Joachim Schmid - Show more from this author LaZ Lernen am Zürisee GmbH https://laz.ch

  Function definition: (Copy & paste into FileMaker's Edit Custom Function window)

//Returns the checksum with the Modulo 10 recursive method. (Used for Swiss payment orders, e. g. ISO-20022.) //The parameters "result" and "loop" have to be set to 0 when the function is called. //by Joachim Schmid, LaZ Lernen am Zürisee GmbH, CH-8706 Meilen (https://laz.ch) Let([ numcl = Filter(num; "0123456789"); loopnext = loop + 1; resultnext = Middle("09468271350"; 1 + Mod(result + Middle(numcl; loopnext; 1); 10); 1) ]; Case( loopnext < Length(numcl); Mod10Rec(numcl; resultnext; loopnext); Mod(10 - resultnext; 10) ) ) Click to copy

Recursive function that returns the checksum with the Modulo 10 recursive method. (Used for Swiss payment orders, e. g. ISO-20022.)
The parameter "num" contains the number; only numerical values are processed.
The parameters "result" and "loop" have to be set to 0 when the function is called.

 

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