2.1.773 Part 1 Section 18.10.1.53, measureGroup (OLAP Measure Group)
a. The standard does not limit the length of the value of the caption attribute.
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Excel restricts the value of this attribute to be at least 1 and at most 65535 characters.
b. The standard does not limit the length of the value of the name attribute.
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Excel restricts the value of this attribute to be at least 1 and at most 65535 characters.