Number ranges tips & tricks

This blog is about number ranges.

Questions that will be answered in this blog are:

  • How to maintain number ranges?
  • How to transport number ranges?
  • How to clean up old number ranges?
  • How to check if number ranges are full or almost full?
  • Which notes can help me when we have performance issues issues with number ranges?

SNRO number range maintenance

Number ranges can be maintained with transaction SNRO. After starting select the number range to maintain:

Now press the button Interval Editing:

Now you can display or change the intervals or current number:

Transport of number ranges

Number ranges are not directly put into a transport. If you want to transport them, select from the range maintenance screen the menu option Ranges / Transport. You will get this warning screen:

After pressing Yes, the popup for the transport request will come.

Number range fill up check

Program RSNUMHOT can be used to check if any number range is full or is at a certain percentage.

Output example:

For background running read the KBA note 2485249 – How to see the spool results of report RSNUMHOT.

Number range buffer

Using transaction SM56 you can check the number range buffer settings:

See also OSS note 2586414 – NUM: Increase default of number range buffer size.

Number range clean up

If you have an older SAP implementation, the amount of number ranges can go very high. There are many number ranges per year, especially in finance. The result can be that transaction SNRO gets very slow. If this is the case install OSS note 2931837 – NR: Reorganization of interval table. This will bring program NK_IV_REORGANIZE to reorganize the number range table:

Number range issues

Number ranges are know to have issues in 2 areas:

  • Performance (mainly on very large systems): can be seen in SM66 or SM50 with long updates on table NRIV
  • Gaps in number ranges where legal requirements exist

OSS notes to check when having number range issues:

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