The Partner Share Total for Equity Group & Is not Exactly 100%

What causes this issue?

The ownership percentages for the partners in the equity group do not
sum to 100%.
Normally, the percentages of ownership for all the partners in an
equity group sum to 100%. It is possible to create equity groups in
which the sum of partner ownership percentages is within a fraction of
100%.
For example, the total ownership percentages of the partners in the
following equity group do not sum to 100%, but the sum is within a
fraction of 100%:
Equity Group: <ZH>EG1</>
,,,,Operator:,,,,,,,,,,,,<ZH>33.333333%</>
,,,,Non-operating partner 1:,,,,<ZH>33.333333%</>
,,,,Non-operating partner 2:,,,,<ZH>33.333333%</>
,,,,,,,,,,,,,,,,,,,,----------
,,,,Sum of partner shares:,,,,,,<ZH>99.999999%</>

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

If you intended to create or select an equity group in which the
ownership percentages of the partners do <ZH>not</> sum to 100%,
proceed to save the equity group or assign it to ownership of the joint
venture.
If you intended to create or select an equity group in which the
ownership percentages of the partners <ZH>do</> sum to 100%, cancel
this selection.

Error message extract from SAP system. Copyright SAP SE.