What is the meaning of ( gold plating ) at maintenance

Gold plating means when you are Adding extra feature in 

your product to delight your customer (a kind of surprise). 

Gold plating is not a bargain. It can increase operation and 

maintenance costs and reduce quality. Gold plating in 

software engineering refers to continuing to work on a 

project or task well past the point where the extra effort is 

worth the value it adds (if any). After having met the 

requirements, the developer works on further enhancing the 

product, thinking the customer would be delighted to see 

additional or more polished features, rather than what was 

asked for or expected. The customer might be disappointed 

in the results, and the extra effort by the developer might be 

futile.

"copied"

gold plating generally is to give extra unpaind service and it's may be bad for the customer

it means fine tuning to your job and i also agree with Mr. Mahmoud Saleh in his answer

i agree with 

Mahmoud Hassan 

Gold Plating - Similar to scope and feature creep, It can increase operation and maintenance costs and reduce quality.

Gold plating is giving the customers extras ( could be in terms of better performance of the product, extra scope, extra functionality or higher-quality components) This entails to meeting and exceeding customers expectations. Usually Gold Plating is Individual / team's impression of what is valued by the customer, and the customer might not agree. It is a problem because very few projects provide what the customer wants. Most of the projects have difficulty meeting the project objectives hence all available effort should go into achieving those objectives rather than Gold Plating. 

Totally agree with Mr. Mohmoud hassan