How To Fix CDS_UNIT_MESSAGE020 - Cannot create mutiple OSQL test environment instances in same test class

CDS_UNIT_MESSAGE020 - Overview

• Message type: E = Error

• Message class: CDS_UNIT_MESSAGE - Message Class

• Message number: 020

• Message text: Cannot create mutiple OSQL test environment instances in same test class

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CDS_UNIT_MESSAGE020 - Cannot create mutiple OSQL test environment instances in same test class ?

  The SAP error message CDS_UNIT_MESSAGE020 indicates that there is an issue with creating multiple OSQL (Open SQL) test environment instances within the same test class. This typically occurs in the context of ABAP unit tests, particularly when using Core Data Services (CDS) views or when testing database operations.
  
  Cause:
  The error arises because the ABAP unit testing framework does not allow multiple instances of the OSQL test environment to be created within a single test class. This restriction is in place to ensure that the test environment remains consistent and that tests do not interfere with each other. When you attempt to create more than one instance, the framework raises this error.
  
  Solution:
  To resolve this issue, you can take the following steps:
  
  
  Single Instance per Test Class: Ensure that you are only creating one instance of the OSQL test environment in each test class. If you need to run multiple tests that require different