Get Error as 'enrolled in the plan or selected more than the limit of 1 options'

Summary:

Content (please ensure you mask any confidential information):

Below error occurred when evaluating any life event. We have two plans called SHE Plan and OPD Plan under same plan type which is Medical Plan Type under same Program.

"You can't enroll in this plan now. (BEN-990095)

The plan name is OPD Cover Plan - SL. You might already be enrolled in the plan or selected more than the limit of 1 options. Review the enrollment guidelines for this offering or contact your benefits representative."

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The option limitations are set as minimum number number of options no and kept 1 only for the maximum number of options in the Option Limitation under Enrollment Tab for both the Plans. But this gives error for one plan which is 'OPD Plan'.