The MiscFeesSubGrp component is used to provide further details for a given MiscFeeType(139) value.
  | 2634 | MiscFeeSubType | Typ |   | Required if NoMiscFeeSubTypes(2633) > 0. | Added EP196
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  | 2635 | MiscFeeSubTypeAmt | Amt |   |  | Added EP196
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  | 2636 | MiscFeeSubTypeDesc | Desc |   |  | Added EP196
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  | 2637 | EncodedMiscFeeSubTypeDescLen | EncDescLen |   | Must be set if EncodedMiscFeeSubTypeDesc(2638) field is specified and must immediately precede it. | Added EP196
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  | 2638 | EncodedMiscFeeSubTypeDesc | EncDesc |   | Encoded (non-ASCII characters) representation of the MiscFeeSubTypeDesc(2636) field in the encoded format specified via the MessageEncoding(347) field. | Added EP196
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