How To Fix OO021 - Interface &1 wird noch von Interface &2 umfaßt

SAP Error Message - Details

• Message type: E = Error

• Message class: OO - Class Builder/API

• Message number: 021

• Message text: Interface &1 wird noch von Interface &2 umfaßt

Was verursacht dieses Problem?

You wanted to delete the implementation relationship for interface
&V1&. However, interface &V1& is still implemented in interface &V2&.
Since all interfaces contained in &V2& must be implemented, you cannot
delete the implementation relationship for &V1& unless the
implementation relationship for &V2& is also deleted.

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