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A 'Type Conversion Failure' essencially means you tried to insert an bowling ball into a garden hose, or in the case of Access, a string (with values in non-date format) into an Date/Time column, an Long Integer into an Integer column, and Integer into a Byte column, etc. <br />
<br />
Check the data types of all columns you're selecting vs. what you're inserting into.
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A 'Type Conversion Failure' essencially means you tried to insert an bowling ball into a garden hose, or in the case of Access, a string (with values in non-date format) into an Date/Time column, an Long Integer into an Integer column, and Integer into a Byte column, etc.

Check the data types of all columns you're selecting vs. what you're inserting into.

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Thanks for the recognition of the answer!<br />
<br />
---<br />
I know the thread has aged a little, but as I was reviewing, I noticed that I forgot the link to a normalization description by MS, so here it is!!<br />
<br />
<a href="http://support.microsoft.com/kb/283878" rel="ugc">http://support.microsoft.com/kb/283878</a>
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Thanks for the recognition of the answer!

---
I know the thread has aged a little, but as I was reviewing, I noticed that I forgot the link to a normalization description by MS, so here it is!!

http://support.microsoft.com/kb/283878 [http://support.microsoft.com/kb/283878]

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I have a query that when I go to append I get an error message,&quot;Type conversion failure &quot;. Then when I hit to preceed any way I get another error message saying, &quot;property value too large&quot;,<br />
<br />
Now the tables are the same all I did was copy and paste the table and rename it to make the table that it appends to.<br />
<a href="https://filedb.experts-exchange.com/incoming/2012/08_w34/598015/appendQueryforcecklistnotworking.zip" target="_blank" class="file-inline" title="append query (14.3 MB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>appendQueryforcecklistnotworking.zip</a>
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appendQueryforcecklistnotworking.zip

I have a query that when I go to append I get an error message,"Type conversion failure ". Then when I hit to preceed any way I get another error message saying, "property value too large",

Now the tables are the same all I did was copy and paste the table and rename it to make the table that it appends to.

On my append query getting error messages, &quot;Type conversion failure&quot;,&quot; property value too large&quot;

Microsoft Access is a rapid application development (RAD) relational database tool. Access can be used for both desktop and web-based applications, and uses VBA (Visual Basic for Applications) as its coding language.

Microsoft Access

SQL (Structured Query Language) is designed to be used in conjunction with relational database products as of a means of working with sets of data. SQL consists of data definition, data manipulation, and procedural elements. Its scope includes data insert, query, update and delete, schema creation and modification, and data access control.

On my append query getting error messages, &quot;Type conversion failure&quot;,&quot; property value too large&quot;

On my append query getting error messages, "Type conversion failure"," property value too large"