高手請進：abaqus做隨機振動仿真出現如下罕見錯誤提示
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我做一個振動工裝的模態+隨機響應分析，設置如下，加載了U1/U2/U3三個方向的PSD，提交分析出現如下錯誤，不曉得是哪里出現了問題，請高手解答。
Error in job Job-3: LOAD CASE 4 HAS BEEN GIVEN IN STEP 0 ON A *CORRELATION OPTION WHICH REFERENCES A BASE MOTION *PSD-DEFINITION OPTION. HOWEVER, THIS LOAD CASE DOES NOT EXIST ON ANY *BASE MOTION OPTION IN THIS STEP.
Job Job-3: Analysis Input File Processor aborted due to errors.
