CL21 is a SAP tcode coming under CA module and SAP_APPL component. View some details about CL21 tcode in SAP.
- CL21 tcode used for : Display Object in Classes in SAP
- Module : CA-CL-SEL (Object Selection)
- Parent Module : CA (Cross-Application Components)
- Package : CLOLD (Discontinued Functions in Classification System)
- ABAP Program : SAPMMCLF

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Definitions
What is SAP ?SAP is the short form of Systems, Applications & Products in Data Processing. It is one of the largest business process related software. This software focused on business processes on ERP & CRM.
What is transaction code in SAP?Transaction code shortly known as tcode, is a shortcut code to access different functional areas in SAP. It avoid users from long menu path to reach a report. Instead of that users can type the corresponding transaction code and press enter, the corresponding SAP page will load. It’s a good practice to remember or note down the transaction codes that we need to use in our regular work.
CL21 related transaction codes
| Tcode | Note | 
|---|---|
| CL20 | Assign Object to Classes | 
| WB75 | Maintain classes to classes | 
| CNV_40300_CHECK | Check mapping for asset classes | 
| CNV_40300_ME_ANLKL | Mapping Template for Asset Classes | 
| CL22 | Allocate Class to Classes | 
| CL6R | Direct Input for Classes | 
| CL6P | Where-Used List for Classes | 
| CL21 | Display Object in Classes | 
| N10D | IS-H*MED: Maint. plan.object classes | 
| F843 | Object Classes | 
| SE91 | Message Maintenance | 
| WB77 | Display assortments to classes | 
| WB78 | Display Class for Classes | 
| /POSDW/TSDS | Display Task Status | 
| CLB3 | Display Classification File |