Any alteration in the provisions (including any standard condition) of a standard security duly recorded, other than an alteration which may appropriately be effected by an assignation, discharge or restriction of that standard security, or an alteration which involves an addition to, or an extension of, the F1land or real right in land mentioned therein, may be effected by a variation endorsed on the standard security in conformity with Form E of Schedule 4 to this Act, or by a variation contained in a separate deed in a form appropriate for that purpose, duly recorded in either case.

Where a standard security has been duly recorded, but the personal obligation or any other provision (including any standard condition) relating to the security has been created or specified in a deed which has not been so recorded, nothing contained in this section shall prevent any alteration in that personal obligation or provision, other than an alteration which may be appropriately effected by an assignation, discharge or restriction of the standard security, or an alteration which involves an addition to, or an extension of, the F1land or real right in land mentioned therein, by a variation contained in any form of deed appropriate for that purpose, and such a variation shall not require to be recorded in the Register of Sasines.

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Any variation effected in accordance with this section shall not prejudice any other security or right over the same F3land or real right in land, or over any part thereof, effectively constituted before the variation is recorded, or, where the variation is effected by an unrecorded deed, before that deed is executed, as the case may be.